Rice nitrogen fertilizer decrement backward moving cultivation method

Abstract

The invention discloses a rice nitrogen fertilizer decrement backward moving cultivation method, relates to the technical field of rice cultivation. The rice nitrogen fertilizer decrement backward moving cultivation method comprises the steps of carrying out field management of controlling diseases, pests and weed; transplanting rice seedlings obtained by dark room seedling raising treatment intoa field block which is subjected to soaking with irrigation water and ploughing and soil preparation treatment to obtain a rice field for rice planting; carrying out fertilization treatment on the rice field, wherein a nitrogen fertilizer is not used as a base fertilizer or a tillering fertilizer; and irrigating a small amount of water in the rice field and enabling the rice field to be dry naturally, and carrying out cyclic irrigation treatment of stopping irrigation for a week before harvesting to obtain ripe rice. The rice nitrogen fertilizer decrement backward moving cultivation method hasthe characteristics that the nitrogen fertilizer consumption is low, the rice yield is high, the nitrogen fertilizer is not applied to the rice in a base fertilizer and tillering period, the nitrogenfertilizer consumption is reduced, furthermore, the nitrogen fertilizer utilization rate is improved, the labor investment is reduced, the method is simple, and the cost is low; and more importantly,the influence on the environment is reduced to a maximum extent, the effect is remarkable, and the universality is wide.

Description

technical field [0001] The invention relates to the technical field of rice cultivation, in particular to a method for transplanting rice after nitrogen fertilizer reduction. Background technique [0002] Rice is one of the most important food crops in my country. Nearly 60% of the population takes rice as a staple food. At present, my country's rice planting area is about 451 million mu, ranking first in the world in terms of per unit yield and total output. Nitrogen fertilizer plays an important role in rice production, but the existing rice cultivation methods lead to the phenomenon of excessive use of nitrogen fertilizer in the rice production process. According to statistics, the amount of nitrogen fertilizer used in rice accounts for 37% of the total amount of nitrogen fertilizer used in my country . Excessive nitrogen fertilizer application will reduce the accumulation of organic matter in the soil, affect soil fertility, cause water eutrophication through surface run...

AI Technical Summary

Problems solved by technology

Nitrogen fertilizer plays an important role in rice production, but the existing rice cultivation methods lead to the phenomenon of excessive use of nitrogen fertilizer in the rice production process. According to statistics, the amount of nitrogen fertilizer used in rice accounts for 37% of the total amount of nitrogen fertilizer used in my country

Excessive nitrogen fertilizer application will reduce the accumulation of organic matter in the soil, affect soil fertility, cause water eutrophication through surface runoff, seriously affect the ecological environment, a large amount of ammonium nitrogen volatilizes air pollution, and generates N through nitrification and denitrification of microorganisms 2 O, exacerbating the greenhouse effect, etc.

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