High yield low risk reproducing technology for temperature sensitive type genic male sterile rice in high altitude low yield field

Abstract

The invention relates to a propagation technique of temperature sensitive genic male-sterile rice planted in low yield land of high altitude area with high yielding and low risk, aiming at overcoming the shortages of propagation method of Hainan propagation and local cold-water serial irrigation propagation of the prior art. By combining the advantages of the two propagation methods, the invention has the advantages that: compared with Hainan propagation, costs for renting fields and transportation are reduced by taking advantages of natural low-temperature conditions of high altitude area; compared with local cold-water serial irrigation propagation, water source is saved; temperature is cooled by using chilled-spring water when temperature is abnormal, so as to ensure successful propagation of the temperature sensitive genic male-sterile rice; adopting agricultural measures such as seedling culture submontane planting on mountains and large roots low density cultivation to improve the output of the temperature sensitive genic male-sterile rice at low-yielding high altitude area. The invention, by taking advantages of the temperature sensitive genic male-sterile rice of high altitude area, is in favor of promoting local economy. In a word, the invention lowers the propagation cost and risk of the temperature sensitive genic male-sterile rice and promotes the development of two system hybrid rice.

Description

[0001] Affiliated technical field: the present invention belongs to rice cultivation technology. It specifically relates to a method for achieving high-yield and low-risk propagation techniques for thermosensitive genic male sterile rice in low-yield fields in high-altitude areas. Background technique: [0002] At present, there are two breeding methods for low-temperature-sensitive genic male sterile rice, early spring breeding in Hainan and local cold water serial irrigation. The former is costly, and abnormally high and low temperatures can easily lead to reproductive failure, which has a greater risk; although the latter is less risky, it is technically difficult and wastes water resources seriously. With the increase in water prices, the cost will also increase. These two propagation methods are not ideal enough, resulting in high cost and high risk of seed propagation of the two-line sterile line, which affects the development of the two-line hybrid rice to a certain ext...

AI Technical Summary

Problems solved by technology

The former is costly, and abnormal high temperature and low temperature can easily lead to reproductive failure, and the risk is greater; although the latter is less risky, it is technically difficult and wastes water resources seriously. With the increase of water price, the cost will also rise

These two propagation methods are not ideal, resulting in high cost and high risk of seed propagation of two-line sterile lines, which to a certain extent affects the development of two-line hybrid rice