Method for cultivating hybrid rice

Abstract

The invention discloses a method for cultivating hybrid rice, which comprises the steps of breeding improved varieties, raising sturdy rice seedlings, field cultivation and prevention and treatment for main diseases and pests. According to the method, the conservation of soil, fertilizer and water, the resistance for cold, drought, lodging and disease and pest and other functions of the soil are improved; and the applying quantity of chemical fertilizer is reduced on the premise of ensuring the national food security, therefore, the cost is saved and the farmer's income is increased, and energy is saved, environment is protected and the agricultural sustainable development is promoted for the country.

Description

technical field [0001] The invention mainly relates to a cultivation method, in particular to a cultivation method of hybrid rice. Background technique [0002] There is no standard sorghum planting model in my country's agricultural system so far. Sparse planting and unreasonable excessive close planting are the bottlenecks that restrict the high yield of sorghum. Especially when sorghum is heading, the functional leaves receive insufficient light, so the sorghum grains are difficult to fill, resulting in reduced production; There is also no standard for farmland ridge formation by farmers, which is blind and arbitrary; especially fertilization. Most farmers who grow sorghum use traditional methods of blind fertilization, and partial application of "high-nitrogen" compound fertilizers or blended fertilizers. Plant 100,000 plants per hectare in Northeast China, use 1,200 catties of mixed fertilizer as base fertilizer, and topdress 200 catties of urea before sorghum headin...

AI Technical Summary

Problems solved by technology

According to China's national conditions of growing population and decreasing land, the extensive sorghum cultivation method and trad...