Abstract: The formation,development,situation and mechanism of resistance of wheat aphid to insecticides were summarized,and the synthetic management was also discussed.

Abstract: Based on the gray-level and color characteristics of eggplant image,hue and color-difference segmentation were conducted by using the rich image processing functions embedded in MATLABThe auto threshold-adaptive method of Otsu operation was specially used for hue segmentationAnd upon the elimination of the residue noise,labeling method for statistical calculation was introduced for the connected regions of the binary imageThe maximum areas were preserved to improve segmentation effectsIn addition,multi-indices were applied to assess the effect of segmentation,in order to get impersonal and reasonable assessment

Abstract: The computer automatic classification method for Landsat TM image covering Poyang Lake wetland was studied.In the experiment firstly unsupervised classification was used to the remote sensing image,manual interpreting was made to determine the attributes,which were transformed to the file of classification cyclostyle,and then carried out supervised classification.It indicated that the classification precision of Poyang Lake wetland was improved through these means.

Abstract: The Coleus blumei was cultured by different nutrient solution in this experiment.The anthocyanin,chlorophyll and photosynthesis of leaves were measured.The results shows that cultured by clear water and supreme A which were lack of phosphorus,the anthocyanin in Coleus blumei was high and the content reached 291.2 mg/g and 210.5 mg/g,respectively.After cultured by supreme A and B with high nitrogen content,the chlorophyll content in Coleus blumei was higher.The potassium content in nutrient solution mainly influenced the stomatal conductance,transpiration rate and photosynthesis rate of leaves.

Abstract: The status of research and exploitation of CP72-1210 as commonly used sugarcane parent was summarized.CP72-1210 was introduced from USA in the early 1980s.Hainan Sugarcane Breeding Station,Guangzhou Sugarcane Industry Research Institute conducted trial crossing with it in 1982/1983 crossing season.After years' experiments,CP72-1210 has become one of the most active and important sugarcane parents in Mainland China,which has produced 14 released sugarcane varieties and a batch of elite breeding materials,of which 26 clones of YT-and YC-series were used as parents in the past five years.Some of the varieties derived from CP72-1210,such as YT93-159,YT89-113,and YT83-271,have been extensive extension cultivars in Guangdong,Guangxi and Yunnan cane growing areas.

Abstract: The"three controls" nutrient management(TCNM) is a new technology with which high and stable yield can be achieved with less fertilizer and pesticide input.Discussed in this paper are some principles of this new technology.(1)Fertilizer-N use efficiency(NUE) is negatively correlated with total N input and N rate at basal and/or at tillering stage.The NUE is greater when fertilizer-N is applied during panicle development and at heading than that applied as basal or at tillering.Therefore the amount of N applied as basal and/or at tillering should be reduced.(2)Tillering rate is determined quantitatively by the existing tiller number,leaf N concentration,and leaf area index.Higher productive tiller percentage(PTP) can be achieved either by reducing maximum tiller number or preventing existing tillers from death.The PTP is closely related with dry matter accumulation dynamics.Limiting dry matter production before panicle initiation is important for reducing maximum tiller number and hence achieving high PTP.(3) The occurrence and development of sheath blight is determined both by climatic factors and canopy indices,i.e.the maximum tiller number,leaf area index,leaf chlorophyll content,and light transmission ratio of the canopy at heading.Thus the disease incidence can be reduced through improved crop management.

Abstract: Ganliangyou 2 was a good quality two-line hybrid rape combination with double-low(low erucic acid and low glucosinolate),which was bred by crossing between ecotypic two-line male sterile rapeseed line 26S and restoring line C-189The breeding process,yield performance and seed production of Ganliangyou 2 were introduced

Abstract: Vegetation coverage around Poyang Lake area in 1989 and 2003 were estimated based on the model of vegetation coverage deriving from normalized difference vegetation index(NDVI) with the remote sensing data.And the change of vegetation coverage grade was established.The spatio-temporal change in vegetation coverage and its driving processes during recent 14 years were also discussed in this paper.The change of vegetation coverage is not obvious in the mass,but obvious between different districts.

Abstract: Four rice combinations were used to study the relationship between distribution of 14C photosynthesis production of flag leaf of main crop and yield of ratooning rice.The results indicated that:(1) About 70%~75% 14C photosynthesis production of flag leaf of main crop was distributed in spikes,and about 25%~30% remained in flag leaves and pedicle sheathes.(2) About 65%~80% photosynthesis production of flag leaf was distributed mainly in the upper second and third internodes of main crop.(3) Distribution proportion of photosynthesis production in spikes was negatively correlated with yield and its components of ratooning rice.On the contrary,its proportion in pedicle sheathes,flag leaves and other leaves was positively correlated with yield and its components of ratooning rice.(4) Distribution proportion of photosynthesis production in any internode was significantly positively correlated with the yield of the same node.

Abstract: The tender leaf and bud of jasminum were chosen as the experimental materials to extract the genomic DNA by means of modified CTAB methodThe purity and concentration of DNA were tested by agarose gel electrophoresis and ultraviolet analyzerThe quality of DNA was good and the concentration was highFurthermore the extract from bud was better then that from tender leaf

Abstract: The paper summarized the developmental progress and modes of rural family used biogas in China.The basic modes for the rural household biogas integrated utilization are"Three combining","four productions in one system" and "five mating" recently years in China,but there are a lot of other ecological modes are proposed,such as the "Guangxi Gongcheng mode ","Jiangxi Gannan mode" and "Guizhou Zhijin mode",the "pig-biogas-fruit mode" was popularized in southern China and got very much effect for the rural circle economy and development.Now we are constructing socialist new rural country in China,the biogas are the basic method for supplying the rural energy in household utilization,the biogas play the roles of rural energy,environmental protection,fertilizer,sanitation,feed and economical,ecological and society effects.The biogas is not only a important tool in New Rural Aera Construction,but also a mode of Chinese rural energy resources development in the future.

Abstract: The situation of pesticide residues in vegetables from December 2005 to October 2006 was investigated.The results indicated that the pesticide contamination in vegetables planted in green ecological garden was less than that planted in individual.The main type of pesticide residues was pyrethroid.The reasonable prevention and control measures were put forward.

Abstract: Based on long-term field investigation,92 external invasion plant species which belonged to 31 families were found in Jieyang city,in which 4 species were the most harmful,23 species were next to them,and 65 species were common plant.The biological characteristics and control methods of the most harmful 4 species(Alternanthera philoxcroides,Eichhornia crassipes,Lantana camara and Ipomoea cairica) were introduced respectively in this article.

Abstract: The genomic DNA samples of more than 120 citrus varieties were isolated by modified CTAB method.The results indicated that the extracted DNA appeared as a clear band when electrophoresed in 1% agrarose gel,the value of A260/A280 was 1.8～1.9,and the RNA was eliminated completely.The DNA samples extracted by this method were suitable for AFLP analysis.

Abstract: In this paper 84 county regions in Jiangxi province were classified into 5 types of climatic region based on the results of clustering analysis of past 30-year meteorological data and geographical elements.The 5 types of climatic region were as follows: South Jiangxi mountainous climatic area;Mid-Jiangxi hilly climatic area;North Jiangxi Poyang-Lake plain climatic area;Northeast Jiangxi mountainous climatic area;Lushan and Jinggangshan mountainous climatic area.

Abstract: The research developments of Phellinus igniarius in morphological characters,main active compositions,pharmacological effects and fermentation process were summarized in this paper.

Abstract: Field plot experiment was conducted to study the effect of spraying three kinds of external phytohormones(gibberellin3,6-benzyladenien and brassinolide) on the leaves senescence in the late growth period of the late-season riceSome senescence indexes including the plasma membrane permeability,content of MDA,activities of SOD and CAT were determinedThe results showed as follows: all kinds of external phytohormones could delay leaves senescence,increase the seed setting rate,and increase the yield,in which 6-BA did bestHowever,the effect of external phytohormones on delaying leaves senescence had the time limitation and the time of efficacy was about two weeks

Abstract: The research of probiotics for aquatic animals is increasing with the demand for environment-friendly aquaculture.Among the large number of probiotic products in use today,the Bacillus is one of the most promising candidate probiotics.The application of Bacillus in aquaculture can improve growth,resist diseases and amend the environment.This paper reviews the characteristic,mechanism and effects of Bacillus in use.Moreover,future recommendation for the development of Bacillus in aquaculture is given.

Abstract: The results of the experiment with the field orthogonal design showed that: 1) the plant density and fertilizer N had little effect on leaf length,width and leaf area of the tobacco;with the remaining leaves increasing,the width and area of upper and middle leaves decreased;2) plant density had no influence on the economic characters,when the remaining leaves reduced,the yield and production value increased significantly;yield,production value,proportion of middle and low grade tobacco leaf and average price were relatively satisfied with nitrogen application of 120kg/hm2;3) the nicotine content in tobacco leaf from upper and middle part decreased as fertilizer N reduced,while increased as the plant density reduced,and the nicotine content in lower leaf reduced when the remaining leaves increased.The nicotine content was the lowest when the plant density was 120cm×45cm,fertilizer N application was 112.5 kg/hm2 with 18 leaves remaining per plant.

Abstract: Petri dish and potted plant spraying methods were conducted to evaluate the combined action of diuron AND atrazineThe results indicated that diuron and atrazin were synergistic in inhibiting sprout growth of germinating barnyard grass,a synergism was also observed in Chenopodium album and Setaria viridis control

Abstract: The components of rice grain,the physiological and inheritance mechanism of forming regularity of rice quality,and effects of environmental factors and cultural conditions on rice quality were summarizedThe problems and technical strategies in rice quality breeding were also put forward

Abstract: According to the interrelated studies in domestic and abroad,the theory of flue gas desulfurization by Thiobacillus ferroxidans was expatiated.The principle of direct and indirect process based on the dual oxidative system of Thiobacillus ferroxidans was circumstantiated.

Abstract: In this study,control of the red imported fire ant in Guangdong province be researched,the best control technology be discussed,then the technology be applied in high risk areaAnd map be factured which marked distribution of the red imported fire ant,This study also analysed dynamic change of ant mound numberThe results showed,the control result is very evident if comprehensive investigate、reinvestigate managemeng and control monitoring by apply repeatedly and circularly,and use methods and available insecticides combined bait and contact insecticides during managemeng,the control technology is very economical and practicalTherefor it might be recommended apply in management of red imported fire ant

Abstract: The results showed as follows: 40 mammal species belong to 7 orders and 17 families were recorded in Lushan Nature Reserve in Jiangxi provinceAmong of them,there were 24 oriental realm species,4 palearctic realm species and 12 widespread species,1 species categorized as the first priority,and 8 species as the second priority in China;3 and 4 species were listed in appendixⅠand Ⅱ of the list of CITES respectively9 species were ranked in the list of China Red Data Book of Endangered Animals,2 species were endemic to ChineseThe faunal feature illustrated that the oriental species were dominantThere were seven ecotypes,in which the species of ground and sub-ground were the richest whereas aquatic species were the leastThe mammal resources were appraised by comparing the biodiversity with its historical resources and the surrounding other natural reservesAt last,some protective suggestions were honestly proposed

Abstract: This article analyzed the present situation and problems of integrated exploitation of water resources of Poyang LakeThen some suggestions for sustaining utilization of water resources of Poyang Lake were put forward

Abstract: This paper systematically introduces the nutritional ingredient of Rhodomyrtus tomentosa fruit,listed the breeding methods of Rhodomyrtus tomentosa and described the application development of Rhodomyrtus tomentosa this years,it is found that Rhodomyrtus tomentosa has bright prospects for development,especially it can promote the economic development in the vast rural areas.

Abstract: Chicken myofibrillar and soy protein isolate were mixed at 1∶1 and dispersed in 0.3mol/L NaCl solution.Mixture was treated by high pressure of 100,200,400,600MPa,respectively.Results indicated that mixed protein did not form gelatin under the pressure of 100MPa and 600MPa,the texture of the pressure-induced gelatin(200MPa,400MPa),which got stable at 48 h, was better than that of heat-induced gelatin,however,water holding capacity(WHC) was not as good as that of heat-induced gelatin.The electronic micrographs scanning indicated that spacious structure of pressure-induced gelatin was denser than that of heat-induced gelatin.

Abstract: The plant anther culture at home and abroad was reviewed in this paper.The important factors affecting the efficiency of anther culture were systematically introduced.In the end,the problems that needed to be solved and prospect in the field were put forward.

Abstract: The foundation of rapeseed microspore culture regenerative system,the theoretics of microspore culture regenerative system and the application of microspore culture regenerative system in rapeseed breeding were summarized in this paper,and an expectation on rapeseed microspore culture regenerative system study in the future was put forward.