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1 狠抓栽培措施,培育高产苗架要提高杂交稻制种异交结实率,首先要有一个好的苗架。培育高产苗架的主要措施:父本实行两段育秧,单株寄栽,培育适龄多蘖壮秧。母本要加强秧田管理,重点是秧田攻蘖,坚持稀播匀播,净秧田亩播种量不超过15公斤,秧龄18～22天为宜,并加强对稻蓟马等病虫害防治。到本田采用肥料一次入库的办法,以后一般不再施肥,亩施氮量一般13～15公斤,氯化钾15公斤,过磷酸钙25公斤,并尽可能增施有机肥,要防止氮肥施得过多过迟。开好排水沟。当母本达到22万穗,或母本栽后一周开始放水烤田,做到时到
1 pay close attention to cultivation measures to cultivate high-yield seedlings To improve the hybrid rice seed outbreak rate, we must first have a good seedlings. The main measures to cultivate high-yield seedling stand: Parental implementation of two sections of seedlings, planting individual plants, cultivating more tillering seedling age. The mother to strengthen seedling management, focusing on tillering seedlings, adhere to the sparse uniform sowing, net seedling acres of sowing no more than 15 kg, seedling age 18 to 22 days is appropriate, and to strengthen the prevention and treatment of pests and diseases such as rice thrips. To Honda using a fertilizer storage method, after the general no longer fertilize the amount of nitrogen per acre generally 13 to 15 kg, 15 kg of potassium chloride, 25 kg of superphosphate, and as far as possible by organic fertilizer, to prevent nitrogen fertilizer Too late. Open the drain. When the mother reached 220,000 spike, or the mother of a week after the plant began to put water Baked Tian, to do when