全苗、齐苗是棉花丰产的前提,为了达到这个目的,必须做好棉花的播种工作。棉花播种除正确掌握播种期外,提高播种技术,保证播种质量是重要的关键。使用机器播种能够更好地满足农业技术的要求。中国农业科学院棉花研究所(以下简称中棉所)1958年机播棉田出苗都很好,4月8日开始播种,播后10天即出苗,到4月23日苗即全部出齐,出苗又快又整齐。机播所以好是由于:(1)播种深度能够掌握一致,播种机上有轮子、限深板、升降桿等机构,可使开沟器深度保持一致,中棉所1958年播种深度为 All seedlings, Qi Miao is a premise for high cotton yield, in order to achieve this goal, we must do a good job of cotton sowing. Cotton sowing In addition to correctly grasp the sowing period, to improve sowing techniques to ensure sowing quality is an important key. Seeding with machines can better meet the requirements of agricultural technology. Cotton Institute of Chinese Academy of Agricultural Sciences (hereinafter referred to as the China Cotton Plant) 1958 cotton seedlings are sprouting well, April 8 began sowing, 10 days after sowing that germination, to April 23, that is, all Miao Qi Qi, emergence again Fast and tidy. Machine sowing is good because: (1) sowing depth can be consistent, sowing machines with wheels, limiting depth plate, lifting rod and other agencies, can make the depth of the opener consistent, sowing depth of 1958