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A method for reducing cadmium in rice and improving soil nitrogen efficiency

An efficient and rice technology, applied in the agricultural field, can solve the problems of not increasing soil nitrogen use efficiency, single effect, etc., and achieve the effect of improving the nutritional level of rice, benefiting growth, and improving use efficiency.

Active Publication Date: 2022-05-10
XISHUANGBANNA TROPICAL BOTANICAL GARDEN CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to solve the single effect of the existing method for reducing cadmium in rice, which cannot increase soil nitrogen use efficiency while reducing cadmium in rice. A method for reducing cadmium in rice to improve soil nitrogen efficiency is proposed, which can Reducing the absorption of cadmium in rice can also improve the efficiency of soil nitrogen use, and at the same time realize the improvement of nitrogen, phosphorus, and potassium use efficiency, reduce the application of chemical fertilizers, and improve crop resistance; adjust the content of phenolic acids in the soil to reduce some soil diseases of rice Occurs; alters soil microbial composition

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  • A method for reducing cadmium in rice and improving soil nitrogen efficiency
  • A method for reducing cadmium in rice and improving soil nitrogen efficiency
  • A method for reducing cadmium in rice and improving soil nitrogen efficiency

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Embodiment 1

[0047] Embodiment 1: as Figure 1-23 As shown, the method for reducing cadmium in rice to improve soil nitrogen efficiency is to apply soil conditioner and foliage conditioner during rice cultivation, and the specific implementation method is as follows:

[0048] (1) After plowing and drying the paddy field, evenly spread the soil conditioner on the surface of the field at an amount of 0.8 tons / mu, plow 15 cm, mix well, and then add water for transplanting;

[0049] (2) During the period from booting to heading, the soil conditioner is applied once as a topdressing fertilizer, and the application rate is 200kg / mu;

[0050] (3) Spray the dilution of the foliage regulator after the rice turns green, at the tillering stage and the filling stage: after the rice turns green, dilute the foliage regulator at a ratio of 1:500, and spray 250L of the foliage regulator per mu Dilution, 7 days / time; during the tillering stage, dilute the foliage regulator with a ratio of 1:500, and spray...

Embodiment 2

[0055] Embodiment 2: as Figure 1-23 As shown, the method for reducing cadmium in rice to improve soil nitrogen efficiency is to apply soil conditioner and foliage conditioner during rice cultivation, and the specific implementation method is as follows:

[0056] (1) After plowing and drying the paddy field, evenly spread the soil conditioner on the surface of the field at an amount of 1.2 tons / mu, plow for 20 cm, mix well, and then add water for transplanting;

[0057] (2) During the period from booting to heading, the soil conditioner is applied once as topdressing, and the application rate is 300kg / mu;

[0058] (3) Spray the dilution of the foliage regulator after the rice turns green, at the tillering stage and the filling stage: after the rice turns green, dilute the foliage regulator at a ratio of 1:800, and spray 560L of the foliage regulator per mu Dilution, 5 days / time; during the tillering stage, dilute the leaf regulator with a ratio of 1:800, and spray the dilutio...

Embodiment 3

[0063] Embodiment 3: as Figure 1-23 As shown, the method for reducing cadmium in rice to improve soil nitrogen efficiency is to apply soil conditioner and foliage conditioner during rice cultivation, and the specific implementation method is as follows:

[0064] (1) After plowing and drying the paddy field, evenly spread the soil conditioner on the surface of the field at an amount of 1 ton / mu, plow up to 18 cm, mix well, and then add water for transplanting;

[0065] (2) During the period from booting to heading, the soil conditioner is applied once as a topdressing fertilizer, and the application rate is 250kg / mu;

[0066] (3) Spray the dilution of the foliage regulator after the rice turns green, at the tillering stage and the filling stage: after the rice turns green, dilute the foliage regulator at a ratio of 1:700, and spray 480L of the foliage regulator per mu Dilution, 6 days / time; during the tillering stage, dilute the foliage regulator with a ratio of 1:700, and sp...

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Abstract

The invention relates to a method for reducing cadmium in rice and improving soil nitrogen efficiency, which belongs to the field of agricultural technology. The soil conditioner is applied during rice cultivation and before heading, and the dilution of the foliage conditioner is sprayed after the rice turns green, at the tillering stage and at the filling stage. The invention achieves a good effect of reducing cadmium, and improves the nitrogen utilization efficiency of rice, reduces the application of nitrogen fertilizer, and reduces the synchronous composite effect of non-point source pollution caused by excessive nitrogen fertilizer input; at the same time, it also reduces the chalkiness and The content of long-chain starch improves the quality of rice.

Description

technical field [0001] The invention relates to a method for reducing cadmium in rice and improving soil nitrogen efficiency, which belongs to the field of agricultural technology. Background technique [0002] At present, the techniques for reducing cadmium in rice mainly include adding lime to adjust the pH, increasing the sequestration of different forms of Cd in organic matter, increasing the application of silicon, iron, and zinc, and the antagonism between the formation of selenium fertilizer and Cd, thereby reducing the Cd absorption of crops. Regulation or natural selection can reduce Cd uptake. However, these methods cannot improve rice quality, increase nitrogen use efficiency, improve soil, regulate rice growth and reduce soil nitrogen non-point source pollution while reducing cadmium in rice. Contents of the invention [0003] The technical problem to be solved in the present invention is to solve the single effect of the existing method for reducing cadmium i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02A01G22/00C09K17/40C09K101/00
CPCA01B79/02A01G22/00C09K17/40C09K2101/00
Inventor 周文君沙丽清刘运通易艳芸陈丽娟邹海洋
Owner XISHUANGBANNA TROPICAL BOTANICAL GARDEN CHINESE ACAD OF SCI