Rice tiller retaining and ear increasing high-yield fertilizer applying technology

Abstract

The invention relates to the field of agricultural cultivation, and discloses a rice tiller retaining and ear increasing high-yield fertilizer applying technology. The fertilizer applying technology includes the steps that according to the total fertilize applying amount of nitrogen fertilizer of 140-185 kilograms / hectare metered according to pure nitrogen, phosphatic fertilizer of 60-90 kilograms / hectare metered according to P2O5 and potash fertilizer of 70-120 kilograms / hectare metered according to K2O, and the fertilizer is applied in four fertilizer applying stages; base fertilizer is applied before plowing or harrowing; striking root fertilizer is applied 3-10 days after rice transplanting; tillering fertilizer is applied 43-55 days before rice earing; tiller retaining and ear increasing fertilizer is applied 35-45 days before rice earing; later earing fertilizer is not applied. A traditional fertilizer applying method of applying earing fertilizer originally is changed, earing fertilizer is not applied any more, a brand-new fertilizer applying stage namely the stage of applying the tiller retaining and ear increasing fertilizer is added in the 10-15 day rice growth stage before applying the earing fertilizer originally, fertilizer application ratio of other fertilizer application stages is adjusted, a normalized and standardized fertilizer application concept is provided, and high and stable yield of rice is achieved.

Description

technical field [0001] The invention relates to the field of agricultural cultivation, in particular to the technique of using fertilizer for rice with tiller retention, ear increase and high yield. Background technique [0002] At present, my country has been used to (in textbooks) adopting and implementing the fertilization techniques of "pre-promoting (base fertilizer + regreen fertilizer + tillering fertilizer), intermediate control (no fertilization at the end of tillering stage), and post-supplementation (supplementary ear fertilizer)" in rice cultivation. From many years of field investigation and observation, this method of fertilization, until the end of rice tillering, cannot maintain the effective supply of fertilizer in the later period due to insufficient rice fertilizer, and the leaves of rice will turn green and turn yellow prematurely, resulting in insufficient tillering. , and the phenomenon of rice branching is prone to occur, and the number of effective pani...

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Problems solved by technology

[0002] At present, my country has been used to (in textbooks) adopting and implementing the fertilization techniques of "pre-promoting (base fertilizer + regreen fertilizer + tillering fertilizer), intermediate control (no fertilization at the end of tillering stage), and post-supplementation (supplementary ear fertilizer)" in rice cultivation. From many years of field investigation and observation, this method of fertilization, until the end of rice tillering, cannot maintain the effective supply of fertilizer in the later period due to insufficient rice fertilizer, and the leaves of rice will turn green and turn yellow prematurely, resulting in insufficient tillering. , and the phenomenon of rice branching is prone to occur, and the number of effective panicles is not up to the standard, resulting in a reduction in rice production

[0003] At the same time, on the basis of the fertilization technology of "pre-promoting, middle-controlling, and post-supplementing" rice, there are two common fertilization techniques. One is to apply more green fertilizer and tillering fertilizer in the early stage, and not apply panicle fertilizer in the later stage. Many, but it is easy to cause the rice to grow too vigorously in the early stage, the leaves are black and green, the leaves are too large, the field is shaded, the ventilation and light transmission are poor, and it is also susceptible to diseases. In the later stage, the tillers and ears are seriously withdrawn, and it is difficult to keep enough effective ears. , resulting in a reduction in rice production; the second is the method of applying too much base fertilizer (i.e. large-head fertilizer) and also not applying ear fertilizer. In the early stage, due to insufficient fertility in the upper layer of the land, the fertilizer efficiency is poor, the rice growth is insufficient, the tillers are few, the effective ear is insufficient, and the fertility in the later stage is insufficient. If it is too big or too fierce, the rice will grow luxuriantly in the later stage, it will mature late, and it will be more susceptible to diseases, and the production will be reduced due to poor production effect

[0004] The above three rice fertilization techniques that have been widely used for decades have been unable to meet the needs of rice cultivation and adapt to the actual demand of rice for nitrogen fertilizers in the current rice cultivation period. The fertilization methods in each period are not optimized enough to increase the yield of rice without tiller protection and ear increase, but will cause the problem of yield reduction

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