Method for cultivating hybrid rice in red loam

Abstract

The invention provides a method for cultivating hybrid rice in red loam. The method comprises steps as follows: a 'sparse, sufficient and early' high-yield culture technique of hybrid rice is adopted; 'sparse' refers to sparse seeding; the seeding quantity of the rice field is within 10 kg per mu, and strong seedlings with two or more tillers are cultivated; 'sufficient' refers to sufficient application of base fertilizers and sufficient transplanting of basic seedlings, the total quantity of the fertilizers for each mu is as follows: 12.0 kg of N, 6.0 kg of P2O5 and 9.0 kg of K2O, and 150,000-160,000 basic seedlings of early rice and late rice are sufficiently transplanted in each mu, and 120,000-130,000 basic seedlings of middle-season rice are sufficiently transplanted in each mu; 'early' refers to early topdressing and early field drying; topdressing is performed immediately after transplantation and green returning, early maturing is promoted, field drying is started after the seedlings of early rice and late rice reach about 200,000 in each mu, field drying is started after the seedlings of middle-season rice reach about 160,000 in each mu, and the field is dried until feet of people don't sink, the field has cracks and white roots are exposed. Repeated tests prove that by comparison with the prior art, the yield is increased by 10% or above by means of the cultivation method; the method is high in practicability, simple to operate and easy to master for farmers.

Description

technical field [0001] The invention relates to a rice cultivation method, in particular to a red loam rice cultivation method. Background technique [0002] Red soil is widely distributed in my country. It starts from the Yangtze River in the north, extends to the Nanling Mountains and northern Taiwan in the south, and includes the north-central Yunnan-Guizhou Plateau and the southern edge of the Sichuan Basin in the west. Generally, the nutrient content is not high, and the available phosphorus is very little; the pH is between 4.5 and 5.2; the rice is heavy, poor in water and fertility retention, poor in cultivability, sour, sticky, and thin, and the yield of rice is not high. In order to give full play to the potential of increasing the yield of hybrid rice varieties and achieve the matching of good varieties and good methods, there is an urgent need for high-yield cultivation techniques of hybrid rice that match the characteristics of red loam soil. However, according...

AI Technical Summary

Problems solved by technology

However, according to all current information, the existing high-yield cultivation techniques for hybrid rice are mostly aimed at general paddy soil, and a small amount of rice planting in red loam has been studied, but they are not matched with the characteristics of red loam, and the technical indicators are different, which is not conducive to High Yield Hybrid Rice