A regulation method of water and fertilizer coupling on rice yield and growth traits

Abstract

The invention belongs to the technical field of rice growth, discloses a method for regulating rice yield and growth traits by water and fertilizer coupling, analyzes the effects of different water management modes and different fertilizer treatments on rice water use efficiency and fertilizer use efficiency, and obtains water-saving, energy-saving Fertilizer mechanism; analyze the influence of water and fertilizer coupling on rice growth and development, yield and rice quality; analyze the effects of different water treatments and fertilizer treatments on rice plant height, tiller number, physiological indicators, and the change mechanism of yield and quality, and obtain yield and rice quality. Correlation between quality. When the amount of nitrogen application reaches 180kg / ha, the amount of irrigation water reaches 1319.5m 3 / ha, a better water-fertilizer coupling mode will be achieved, and the present invention can obtain higher yield, and maintain higher nitrogen fertilizer agronomic use efficiency, water use efficiency and irrigation water use efficiency.

Description

technical field [0001] The invention belongs to the technical field of rice growth, and in particular relates to a method for regulating rice yield and growth traits by water and fertilizer coupling. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Rice is the food crop with the largest planting area and production volume in my country, and it is also the crop with the largest water consumption. At present, its water consumption accounts for about 54% of the country's total water consumption and more than 70% of the total agricultural water consumption. Water and fertilizer are the main limiting factors affecting its growth and development. The impact of nitrogen fertilizer on rice production is second only to water, and China has become the world's largest consumer of nitrogen fertilizer. In the traditional rice production, due to the water and fertilizer management mode of "big water and big fertil...

AI Technical Summary

Problems solved by technology

At the same time, a large number of seepage and runoff in the field not only cause the loss of nutrients in the farmland, but also cause water pollution.

[0009] (2) With the improvement of rice yield level, the amount of nitrogen fertilizer application is increasing, resulting in the decrease of nitrogen fertilizer use efficiency and a large amount of nitrogen loss, which directly and indirectly lead to a series of adverse environmental reactions

[0010] (3) In the prior art, the accuracy of rice growth information acquisition is poor

[0011] Difficulty in solving the above technical problems: Most of the previous studies focused on the single-factor effects of water or fertilizer, and there were few studies on the effects of water-fertilizer dual factors on rice.

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