Method of non-chemical control means for preventing rice lodging

Abstract

The invention relates to a method of non-chemical control measure for preventing rice from lodging, in particular to a method for preventing the rice from lodging, which solves other technical problems. The method is that the pure nitrogen content of nitrogenous fertilizer is controlled to be 8-12kg / mu; from the initial stage of stem pushing to grouting period, kalium is supplemented on leaf surface for two times consecutively so as to increase the tenacity of eustipes of the rice; water is used scientifically; the shallow water layer is kept in the period of seedling establishment; wetness irrigation is carried out in the tillering stage; the field exposure and field sunning are started when the number of the seedlings reach to 80-90% of the number of spikes, slight sunning is adopted for a plurality of times so as to control inefficient tillering, promote the root system to grow deeply and strengthen the boles and plants; after the spikes are differentiated, irrigation is carried out and the shallow water layer is kept till the heading flowering period; interval irrigation is carried out in the grouting maturity stage, and dryness and wetness are alternate; the water is broken about 7 days before the harvest; after the experiment, the phenomenon that only one plant leans appears in the experimental field of five mu, and the effect belongs the first one in the country at present.

Description

1. Technical field: [0001] The invention relates to a method for preventing rice lodging, in particular to a method for preventing rice lodging without chemical control measures. 2. Background technology: [0002] Lodging is a major obstacle in rice production. At present, there are three types of anti-lodging measures: breeding, cultivation and chemical control. There are several varieties of dwarfing agents used for crop lodging resistance, such as chlormequat, paclobutrazol, and trinexazone. These agents all have a similar mechanism of action, which is to inhibit the biosynthesis of gibberellin in plants, thereby inhibiting the elongation and growth of plants. However, gibberellin is not only an important hormone for controlling vegetative growth such as elongation of rice stems and leaves, but also a key hormone for controlling reproductive growth such as rice booting and ear setting. Therefore, while these growth dwarfing agents inhibit the growth of stems and leaves,...

AI Technical Summary

Problems solved by technology

Because the main node that affects lodging is the basal node, only the application of dwarfing agents on the 40th day before the emergence of the ear can effectively shorten the basal node and effectively inhibit the occurrence of lodging; but this period is when the rice ear begins to differentiate dwarfing agent will seriously hinder the development of young panicle; if the dwarfing agent is applied at the late stage of young panicle development, that is, about 10 days before the emergence of the panicle, although the development of the panicle will not be affected, the best period of lodging resistance will be missed

Therefore, how to properly choose the method of preventing rice lodging, which can effectively exert the effect of lodging resistance, and will not inhibit the development of rice ears and cause yield reduction, is a dilemma.