Cotton stays "eight not" and "five"

8 Don't be: Do not choose cotton plants with severe pests and diseases. Verticillium wilt is a chronic disease that restricts cotton production. Cottonseeds are carriers of pathogens, and germs can spread rapidly with cottonseed. Therefore, the cotton plants with poor resistance to wilt, verticillium wilt, and cotton plants with poor resistance to insects must be eliminated (while cotton plants that perform well in severe disease can be preserved).

Do not choose peach before the peach and late autumn peach peach and late autumn peach growth dysplasia, poor maturity, boll weight, seed germination rate is low, weak growth.

Do not use “peach-sweet” cottonseeds. Some growers have poor habits of “splitting mouth peaches and picking wet flowers.” Because they are not fully mature and do not complete postharvest, they absolutely cannot leave seeds. .

Do not spray ethephon on cottonseed, although it can promote early maturity of cotton by 5 to 7 days, but the damage to cottonseeds is large, resulting in incomplete development and cannot be planted.

Do not use heavily degraded varieties of cotton cross-pollination crops, out-crossing rates of 3% to 20%, insect-resistant cotton varieties in a few years of continuous breeding process, if you do not purify and rejuvenate, often caused by insect pollination caused by biological Learn to mix. For low-purity plots, avoid seeding.

Do not choose hybrid cotton varieties at the current level of technology, hybrid cotton varieties are not perfect, and the separation of F2 generation is very serious and should be avoided.

Do not dry the cotton seed with high water content on the cement floor on the cement floor, which will cause some cotton seeds to form “mute seeds” and lose the ability to germinate.

Do not store together with pesticides and chemical fertilizers Some farmers will store cottonseed with pesticides and chemical fertilizers for a long period of time. Due to poor ventilation and toxic gases emitted from pesticides and chemical fertilizers, they will damage the normal physiology of cottonseeds and cause a sharp drop in germination rate.

The “five priorities” are: To select land plots with high purity, to select cotton plants free of pests and diseases, to set aside the fields in the fields and select the species in the central government, choose “peach” and use the “dried flowers”. ".

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