Water and fertilizer management method for whole growth duration of rice

Abstract

The invention discloses a water and fertilizer management method for whole growth duration of rice. The method comprises the steps of 1 field management, wherein soil is turned at the depth of 30 cm to 40 cm, base fertilizer is applied at 150-200 kg / mu, irrigation and wet tillage are conducted, and after soaking is conducted for 1 d to 2 d, furrowing and transplanting are conducted; 2 transplanting-green returning period, wherein the state that a water layer in a field does not submerge uppermost completely-leafed auricles of rice seedlings is kept; 3 green returning-tillering period, wherein intermittent irrigation is conducted; 4 tillering-ear breeding period, wherein tillering fertilizer topdressing is conducted, and watering is conducted until the water layer height is 3 cm to 4 cm; 5 ear breeding-earing period, wherein earing fertilizer is sprayed on the leaf surfaces, and meanwhile intermittent irrigation is conducted; 6 filling period, wherein the earing fertilizer is sprayed on the leaf surfaces, intermittent irrigation is conducted, and water draining for field drying is conducted 5-7 days before harvesting. According to the method, the fertilizer and the water are scientifically managed, the fertilizer is regulated by the water, shallow and frequent irrigation is conducted, promotion and control are combined, qi is regulated by the water, roots are nourished by qi, leaves are protected by the roots, the yield is guaranteed by the leaves, therefore, the environmental conditions are improved, pathogenic bacterium reproduction and infection are controlled, the rice grows healthily and strongly, and the disease resistance is improved; in addition, the rice has the advantages of being high in effective tillering rate, long in ear and high in setting rate in the grow period.

Description

technical field [0001] The invention relates to a method for managing water and fertilizer during the whole growth period of rice, and belongs to the technical field of agricultural science and technology. Background technique [0002] Due to the excessive and unreasonable, timely and symptomatic use of fertilizers and drugs in China, the utilization rate of fertilizers and drugs is not high, which has brought about soil compaction, acidification, pesticide residue toxicity, increased resistance (resistance) of diseases and insect pests, large occurrence of secondary pests, and environmental pollution. A series of problems, such as the destruction of ecological balance and ecological balance, seriously threaten the quality and safety of agricultural products and the safety of agricultural ecological environment in my country. [0003] Most of the existing farmland chemical fertilizer reduction technologies in my country are designed for local links of farmland pollution. The ...

AI Technical Summary

Problems solved by technology

[0002] Due to the excessive and unreasonable, timely and symptomatic use of fertilizers and drugs in China, the utilization rate of fertilizers and drugs is not high, which has brought about soil compaction, acidification, pesticide residue toxicity, increased resistance (resistance) of diseases and insect pests, large occurrence of secondary pests, and environmental pollution. A series of problems, such as the destruction of ecological balance and ecological balance, seriously threaten the quality and safety of agricultural products and the safety of agricultural ecological environment in my country.

[0003] Most of the existing farmland chemical fertilizer reduction technologies in my country are designed for local links of farmland pollution. The technology is scattered and the integration is low. The integrated technology of source reduction and process interception is still relatively lacking, and the regional display degree is low. To achieve the purpose of protecting the environment at the expense of agricultural production