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小麦播种过深难出苗,即使个别植株能顶出土,也是苗子细弱,苗不全、不旺,从而造成严重减产。采取深种浅盖播种方法,虽然种得深,但覆土浅,不仅能出苗,还能使作物更好地达到全苗、壮苗。一、好处 (一)抗寒据1977年调查,播深1.5—2寸的小麦越冬死亡率为16.6—17.4％,而浅种0.6—1寸的越冬死亡率为68.3％。1978年洪善科研队试验,深种浅盖的死亡率3.3％,平播的死亡率为11.5％。由于深种浅盖的地面形成沟坡起伏的一垄一沟,小麦长在垄沟里,两旁的垅背如同天然屏障,起到抗寒避风的作用。尤其在冬季雪少、无覆盖的年份,在腊月
Sowing too hard for seedling, even if individual plants can top soil, but also thin seedlings, incomplete seedlings, not flourishing, resulting in serious cuts. To take a deep cover shallow sowing method, although planted deep, but covered shallow soil, not only can emerge, but also make the crop better to achieve full seedlings, strong seedlings. First, the benefits (a) cold According to the 1977 survey, sowing 1.5-2-inch wheat overwintering mortality was 16.6-17.4%, while shallow 0.6-1 inch overwintering mortality was 68.3%. In 1978, the Hongshan research team tested 3.3% of the deep-covered cap and 11.5% of the broadcaster. As a result of the deep shallow cover of the ground to form a ditch furrows, furrows, wheat grow in furrows, both sides of the back as a natural barrier, play a role in cold shelter. Especially in winter less snow, no coverage of the year, in the twelfth lunar month