Cotton varieties are important carriers of comprehensive cotton cultivation techniques, and their contribution to cotton production has reached 40-60%. At present, the significant increase in yield of cotton varieties has been recognized by cotton farmers. However, a good variety only closely integrates with the local ecological conditions, according to the characteristics of the species to take appropriate management and cultivation measures, the implementation of good and good seeding methods can give full play to the role of improved varieties of yield, tap the potential for yield increase, and achieve the purpose of high yield, quality and efficiency.
So how to choose cotton varieties?
(a) Grasp the principle of adapting to local conditions. For the high-yielding cotton fields with good fertilizer and water conditions, Xin Qiu No.1, which has popularized fertilizer-resistant water and large potential for yield increase, Xin Qiu No.2 and Xin Qiu No.3 for hybrid insect-resistant cotton can be selected. Xin Qiu No.1 and Zhong Mianmian2 can be selected as general cotton fields. No., Lu Mianyan 18, Xinfeng 66, Zhongmian 41 etc., summer cotton can be selected Lu Mianyan 19, yellowing wilt seriously ill cotton field, low-lying land must use Zhongmian No.2.
(B) master the characteristics of varieties. The selection and cultivation of fine cotton varieties must understand the main characteristics of the varieties. Only by knowing and mastering the characteristics of the varieties can the cultivation and management achieve the purpose of increasing production accordingly.
(3) To master the techniques for supporting cultivation of good seeds and good methods. After understanding the characteristics of the cotton varieties, we must master its cultivation techniques, such as: sowing time, planting density, reasonable management of fertilizer, scientific control, simplified pruning, pest control and so on. Only by mastering the cultivation techniques of improved varieties and good methods can we maximize the potential for yield increase of improved varieties.
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