Ratoon rice formula fertilizer for first season jointing stage, and fertilizing method thereof

Abstract

The invention relates to a ratoon rice formula fertilizer for a first season jointing stage, and a fertilizing method thereof, and belongs to the technical field of crop cultivation. The formula of the formula fertilizer is characterized in that a quick-acting nitrogen fertilizer accounts for 20% of the nitrogen application amount, a nitrogen fertilizer with the controlled release period of 40 days accounts for 30% of the nitrogen application amount, a nitrogen fertilizer with the controlled release period of 60 days accounts for 50% of the nitrogen application amount, and a potash fertilizerand the above nitrogen fertilizer prepared by adopting a slow control technology are mixed to prepare the slow control type compound fertilizer with the formula ratio of N:K2O being 40:10. The fertilizing method comprises the following steps: firstly, applying 30-40 kg of a common compound fertilizer, and then manually broadcasting or spraying 20 kg / mu of the formula fertilizer by combining fieldrehydration in the jointing stage of the first season rice. The formula fertilizer and the fertilizing method are convenient to operate, save labor, improve the fertilizer utilization rate, are beneficial to later-period management of the first season rice, reduce the risks of snooze late-maturing and lodging of the first season rice, are good in fertilizer retention effect, and are suitable for sandy soil planting with poor fertilizer retention performance.

Description

technical field [0001] The invention belongs to the technical field of crop cultivation, and in particular relates to a formula fertilizer for ratooning rice used in the jointing stage of the first season and a fertilization method thereof. Background technique [0002] The ratooning rice mainly uses the dormant buds surviving on the rice pile after harvesting, and gives them suitable conditions such as water, temperature, light and nutrients to cultivate them, so that they can germinate and regenerate tillers, and then mature rice that is heading. [0003] At present, the area of ​​ratooning rice in my country is about 7 million mu, but the area of ​​paddy fields suitable for ratooning rice production is about 50 million mu, and the development space of ratooning rice is relatively large. Some of them belong to sandy soil with poor fertilizer retention performance. For the planting of regenerated rice on sandy soil, according to the traditional method, the germination ferti...

AI Technical Summary

Problems solved by technology

This operation will cause mechanical damage to the first season rice, which is prone to lodging. Second, it is difficult to control the timing of fertilization, especially if the application time of nitrogen fertilizer is incorrect, which will easily cause the rice to become green and late-maturing, delay the harvest of the first season rice, and affect Safe earing and yield in the later regrowth season

If you want to adopt a one-time basal fertilizer without topdressing in the later stage, the fertilizer preservation effect will be poor, and the yield in the subsequent regeneration season will be low