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一、品种选择。首先搞简化栽培应选择植株清秀、疯权(即叶枝)少、赘芽少且疯权上的亚果枝结铃性强的品种。其次由于棉花播种时正值冷暖气流交替期,播种后易遭受冷空气侵袭,造成烂种、烂芽或病死苗引发缺苗断垄或毁种,应选择出苗好、前期生长发育进程快、生长势强的品种;由于老棉区土壤中病菌多,大面积倒茬难度大,多年重茬地、重病地应选择高抗枯萎、抗黄萎或高抗枯萎、高耐黄萎病的品种。另外由于各地留苗习惯偏大,加
First, the choice of species. First of all, to simplify the cultivation should choose a handsome plant, crazy power (ie, leafy) less, less buds and mad crazy sub-fruiting branches of bell-type strong. Second, due to cotton planting is positive when the alternating cold and warm air flow, after planting vulnerable to cold air invasion, resulting in rotten, rotten buds or diseased seedlings caused by lack of seedlings off ridge or rupture, should choose a good emergence, early growth and development of fast growth Due to the soil in old cotton area has many pathogens, it is very difficult to stubble a large area for many years, so it is necessary to choose the varieties with high resistance to wilt, anti-wilt or high resistance to wilt and verticillium wilt. In addition due to the habit of staying around too large, plus