一、缺苗的情况自治区各棉区,历年来由于自然灾害和耕作不良,造成不少棉田缺苗以至翻种,给生产带来极大的损失.据调查,实收面积约为播种面积的90%左右;在收获面积中又有约30%左右的棉田因保苗不足而降低产量.每年因翻种和缺苗所造成的产量损失,估计约为应收获总产量的25%左右.这不仅影响了国家的计划生产,而且降低了社员的劳动收入.由於保苗不足,在急需加强中耕、间定苗和追肥等田间管理的时机不得不抽出大批劳力进行移苗补种,因而放松了苗期管理,影响了产量的提高.南疆不少地区在补种的过程中,忽视品种保纯工作,将早熟的C—3173种子给108—ф棉 First, the lack of seedlings The autonomous regions of the cotton area, over the years due to natural disasters and poor farming, resulting in a lot of lack of seedlings and even turn over the cotton fields, to produce a great loss.According to the survey, the actual area of ​​about sown area About 90%; and about 30% of the harvested area cotton fields due to lack of seedlings and reduce production each year due to transplanting and lack of seedlings caused by the loss of production, it is estimated that about 25% of the total harvest should be not only this not only Affected the planned production of the country and reduced the labor income of the members.Since seedling shortage was insufficient, a large amount of labor force had to be withdrawn for seedling replanting due to the urgent need of strengthening field cultivation such as cultivating, simulating seedling and topdressing, which relaxed seedling management , Affecting the increase of yield.In many areas of southern Xinjiang in the process of replanting, ignore the variety of pure work, the precocious C-3173 seeds to 108-ф cotton