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1 抢早播种,培育壮苗培育壮苗是棉花早发的基础,在育苗上,一是留足苗床.培肥钵土。按照苗床与大田1∶10预留床地,制钵前要把有机肥与无机肥相结合,培肥钵土。二是在播种前15d 左右晒棉种,促使棉种后熟,提高发芽率和出苗率,并于播前1～2d 用种衣剂包衣脱绒的于棉籽。三是适期早播。抓住冷尾暖头,日均气温稳定通过12℃,抢晴天用包衣的干籽播种,这样吸水与感温同步,防治地下害虫,有利于一播全苗。四是管好苗床,移栽前7d 揭膜炼苗,争取移栽时苗高15cm,叶色深绿,红茎一半,白根盘钵,子叶完好率在85%以上。
1 early seeding robbed, nurturing strong seedling nurturing seedlings is the basis of early cotton, nursery, on the one hand leave seedbed. In accordance with the seedbed and field 1:10 reserved bed, before making mortar and organic fertilizer combined with inorganic fertilizers bowl soil. Second, about 15 days before sowing cotton seed, prompting the cotton seed ripening, germination and germination rate increased, and 1 ~ 2d before sowing with seed coating agent in cottonseed. Third, early sowing on schedule. Seize the warm end of the cold tail, the average daily temperature and stability through 12 ℃, grab sunny days with the coating of dry seed sowing, so water and temperature synchronization, prevention and control of underground pests, is conducive to a broadcast of seedlings. Fourth, the tube is good seedbed, 7d before transplanting Jiemian Lianmiao, when transplanting seedling height 15cm, dark green leaves, red stem half, white root bowl, cotyledons intact rate of more than 85%.