The invention discloses a method for repairing cadmium-contaminated soil through rice by means of water management and application. The method comprises the steps of 1, determining the time for the beginning of water management; 2, taking specific measures for water management. According to the method, the content of Cd at the overground parts of rice and rice grains is increased, and thus the effect of repairing the cadmium-contaminated soil is achieved. Due to water management, the redox potential of the soil changes, and thus the movability and bio-availability of Cd in the soil can be lowered. In the meanwhile, the water management cost is low, the operation is simple, batch treatment is easy to achieve, and large-scale application and popularization are facilitated.

Method for repairing cadmium-contaminated soil through rice

The invention belongs to the technical field of rice planting, and discloses a yield-increasing culturing method of southern indica hybrid rice. According to the method, the culturing row direction ofthe southern indica hybrid rice is the direction from south to north or near south to north within 45 degrees south by east to 45 degrees south by west; ridges in the near south to north direction within 45 degrees south by east and 45 degrees south by west are firstly selected in the row direction, and box-by-box transplanting is conducted along the ridges; according to wide and narrow combination row spacing, the east to west direction faces a field, the east or west wind direction is taken as the primary in middle and later periods of rice growing, and the culturing inserting row directionof the rice needs to be correspondingly adjusted to be the near east to west row direction. The method has the advantages that not any production cost is increased, all row direction treatment experiments are conducted taking crops with higher plants and light contending and light shielding amount plants such as the indica hybrid rice are taken as study objects, synchronous large-area multi-pointcomparison experiment demonstration verification is conducted for two years, a simple and easy-to-implement crop culturing row direction determining method is obtained, and the culturing spacing is changed from the usual 30 cm into 40 cm equal row or 50-30 cm wide and narrow row spacing while the optimal row direction is adopted.

Yield-increasing culturing method of southern indica hybrid rice

The invention discloses a cultivating method of green high-zinc rice The method includes the following steps that a rice variety which has the plant height being larger than or equal to 150 cm in themature period and the plant height reaching up to 60 cm or above before jointing, is resistant to lodging, and has rice stem joints capable of forming water roots is selected, sowing and rice seedling raising are carried out, and rice seedlings are obtained; the rice seedlings are transplanted into a field, with the condition that plant newly-growing interior leaves are not submerged as the standard, whole-process deep water irrigation cultivation is carried out, no pesticide is applied in the cultivating process till the mature period, and the green high-zinc rice is harvested The rice variety suitable for deep water planting is adopted, cultivation is carried out in a whole-process deep water irrigation mode, by means of the method, under the condition that the pesticide is not applied, rice plant diseases and pests, especially diseases caused by rice blast and lepidoptera pests are effectively controlled, the problem of pesticide residues is avoided, the content of zinc in rice grains is remarkably increased while the yield can be guaranteed, and then the green high-zinc nutritional rice is obtained

Cultivating method of green high-zinc rice

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Cultivating method of green high-zinc rice