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直播水稻省工、省力、节本、增效,深受农民欢迎。浙江省直播稻1997年已达196.83万亩,1998年达270.45万亩。大量研究和生产实践表明,直播水稻分蘖早,分蘖速度快,单株分蘖特别是低位分蘖相对较多,往往难以控制最高苗峰,成穗率降低,影响产量的进一步提高。春花茬直播晚稻由于生育期长,无效分蘖期也长,加上分蘖期气温较高,这个问题更显得突出。因此,控制最高苗峰,提高成穗率已成为当前提高春花茬
Live rice province, labor-saving, cost-saving, efficiency, welcomed by farmers. Direct seeding rice in Zhejiang province reached 1,968.83 million mu in 1997 and 2.704 million mu in 1998. A large number of research and production practices show that direct seeding rice has early tillering and fast tillering speed, and tillers of single plant, especially low tillers, are relatively more often. It is often difficult to control the highest seedling peak and the percentage of ear to ear becomes lower, which affects the yield increase further. Spring stubble live late rice because of long growth period, ineffective tillering period is also long, coupled with the higher temperature during tillering, the problem is even more prominent. Therefore, to control the highest Miao Feng, into the ear rate has become the current increase spring stubble