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我地棉花种植实行水旱轮作制。按说,棉花枯萎病不致成灾,但因茬口布局中轮作年数的限制,十多年菌量累积和该病菌顽固等原因,重病田仍占较大比例,产量损失很大。针对这一问题,我们示范引种了抗病棉种86-1,对其种植效应特别是后效应(即次年对接茬棉发病的影响)进行了初步研究,并试图将“后效应”应用于生产,为水旱轮作地区压缩重病田、提高经济效益提供一条切实可行的路子。
I planted cotton crop rotation and drainage system. It is said that cotton blight is not disastrous. However, due to the limitation of rotation years in the layout of stubble crops, accumulation of bacteria in more than ten years and stubbornness of the bacteria, serious disease still occupies a larger proportion and yield loss is very large. In response to this problem, we demonstrated the introduction of the resistant cotton seed 86-1, and conducted a preliminary study on its planting effect, especially the after-effect (ie, the impact of the following year on the cotton yield), and tried to apply the “post-effect” to Production, for the rotation of crop rotation and compression fields, improve economic efficiency to provide a practical path.