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播前晒烘棉种,为苏联先进经验。据说播前10—30天,每天晒4—5小时,晒4—12天,或用30°—40℃烘20小时,可提早出苗两天,多出苗10—15%,提早成熟1—2天,每亩可增产13斤籽棉左右。查我国山东高密等地,远在清朝栽植中棉时代,就有晒种习惯。我国自1953年起,在各地开始进行这一研究,并在局部地区,试行推广这一措施。南方以晒时空气湿
Pre-sowing drying cotton species, the Soviet advanced experience. It is said that 10-30 days before sowing, drying 4-5 hours a day, drying 4-12 days, or bake 20 hours at 30 ° -40 ℃, early emergence of two days, more sprout 10-15%, early maturity 1-2 Day, per acre can increase about 13 pounds of seed cotton. Check our high-density Shandong and other places, far in the era of cotton planting in the Qing Dynasty, there is drying habit. Since 1953, our country started to carry out this research in all parts of the country and piloted this measure in some areas. Southern wet sun time and air