A production method for realizing mechanized seed production of hybrid rice by integrating seedling throwing and direct seeding technology

Abstract

A method for mechanized seed production of hybrid rice through integration of the seedling slinging technology and the direct seeding technology particularly includes the steps that the number of days of difference from sowing to heading of male parents and female parents is calculated, seedlings of parents (normally the male parents) with a long growth period are grown in advance (preparation of seedling slinging is made), and when the seedling age approaches the number of the calendar period difference days from sowing to heading, mechanized seedling slinging or manual seedling slinging is conducted in advance on a prepared field according to a certain proportion so that seedlings can be evenly distributed in the field; meanwhile, seeds of parents (normally female parents) with a short growth period are soaked at the right time, germination is accelerated, according to the difference between calendar periods from sowing to heading, the seeds are evenly and directly sowed in the field (in a mechanized mode), so that the condition that the male parents and the female parents are planted in the field at the same period is guaranteed, the parents are evenly mixed, the mode that the parents are planted in different rows in traditional seed production is broken, labor is saved, field management is facilitated, mechanized harvest is achieved with the combination of the mixed sowing seed production technology (including the male parent herbicide sensitivity method, the glume color selection method and the like), and therefore mechanization of the whole process of seed production is achieved.

Description

technical field

[0001] The invention relates to the field of hybrid rice seed production, in particular to a method for realizing hybrid rice mechanized seed production by combining seedling throwing and direct seeding techniques. Background technique

[0002] Hybrid rice has made great contributions to my country's and global food security, but hybrid rice seed production has many links and complicated procedures, and relies too much on intensive human labor, resulting in low production efficiency. In recent years, with the rapid development of my country's economy and the shortage of rural labor force, the area of ​​hybrid rice seed production has shrunk year by year. It is estimated that in recent years, the area of ​​hybrid rice seed production in my country has decreased by about 300,000 mu. The Ministry of Agriculture predicts that hybrid rice seeds will The market supply will change from a surplus to a tight supply. Therefore, realizing the mechanization of the whole ...

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