Cultivation method for Koshihikari rice

Abstract

The invention discloses a cultivation method for Koshihikari rice. The method comprises the steps of soil preparation, sowing, seedling cultivation, transplantation, fertilization and water management. The sowing and rice field management measures for timely late sowing, sparse sowing, previous promotion and subsequent control are adopted; according to a straight-line fertilization method, under the condition that the total N application amount is invariable, the N application ratio of a base fertilizer to a tillering fertilizer to an earing fertilizer to a granular fertilizer is 1:1:1:1; according to an improved K application method, K serves as the base fertilizer or an additional fertilizer. According to the cultivation method, the Koshihikari rice growth and development law is coupled with a cropping system, ecological conditions, soil conditions and production conditions of Huang-huai rice areas to form a specific cultivation method, the problems of lodging and premature senility are effectively solved; therefore, a high yield is gained.

Description

technical field [0001] The invention relates to a cultivation method of crops, in particular to a cultivation method of Koshihikari rice. Background technique [0002] China is the world's largest producer and consumer of rice, with more than 60% of the population taking rice as a staple food. The rapid economic development and the improvement of people's living standards have brought changes in dietary life, and people's demand for rice has also begun to change from quantity to quality and taste. It is a very urgent task to improve the quality of rice, especially the eating quality. In recent years, China's high-quality rice breeding and production have made great progress and development, but there is still a big gap with Japan's ace variety "Koshihikari" rice in terms of eating quality. Koshihikari rice is originally produced in Niigata Prefecture, Japan. It is recognized as a top-quality rice variety in the world. "Koshihikari" rice looks good, the rice is bright and c...

AI Technical Summary

Problems solved by technology

However, Koshihikari is cultivated in the Huanghuai rice area, and has its unique growth and development rules and biological characteristics, which are highlighted in the short growth period, long basal internodes, and high temperature season in the late growth period (maturing around September 20). If the traditional local fertilization method of "heavy in the front, steady in the middle, and light in the back" or the Japanese "V" fertilization method is used, the growth will be promoted too much in the early stage, and the supply of N fertilizer in the later stage will be insufficient, which will easily lead to lodging and premature aging; "" word fertilization method, the growth inhibition is too heavy in the early stage, and the promotion is too strong in the middle stage, resulting in insufficient population, excessively long upper leaves, and reduced yield.

Therefore, in the Huanghuai rice area, none of the above fertilization methods can be applied to Koshihikari, and no perfect Koshihikari high-yield fertilization method has been formed so far.

[0004] Traditional dry seedling raising adopts the method of "pre-control and post-promoting", that is, after rice seedlings are generally not topdressed or watered, the growth is overly controlled, and about one week before seedlings, fertilization and water are vigorously promoted, resulting in excessive growth of rice seedlings, Soft tissues, few tillers, slow turning green after transplanting, few hair roots, late tillers, low yield

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