When selecting cotton varieties, choose high-purity plots and pest-free cotton plants. Select the Piaotao at the center of the site and select the ripe “dried flowersâ€. Also note the following points: Do not select hybrid cotton varieties. Under the current state of the art, the separation of hybrid cotton varieties F 2 is very serious and should be avoided. Do not choose before the peach and late autumn peach peach and late autumn peach growth and poor growth, poor maturity, boll weight, seed germination rate is low, growth is weak, should avoid seeding. Don't choose "peeling" cotton Some cotton farmers have more habits to develop more full-fledged peaches, and still have the habit of "splitting the mouth and picking wet flowers." Since this type of ripe peach is not fully matured and is not ripened, it must not be cooked. Keep seed. Do not choose seriously degraded cotton varieties Cotton is a regular cross-pollination crop, out-crossing rate of 3% to 20%, after several years of continuous breeding process, insect-resistant cotton varieties, if not purified, often due to insect pollination Cause biological confusion. Therefore, for the plots with low purity and severe degradation of species, avoid seeding. Do not select cotton plants with severe pests and diseases, wilt disease, Verticillium wilt is a chronic disease constrained cotton production, cotton is also a carrier of pathogens, pathogens can spread rapidly with the cotton. Therefore, cotton plants infected with wilt disease, verticillium wilt, and cotton plants with weak insect resistance must be eliminated. However, cotton plants that perform well in serious diseases can be kept. Do not choose the cotton that has been sun-dried on the concrete floor. Drying the cotton with high water content on the concrete floor will cause some cotton seeds to form a “mute†and lose the ability to germinate. Do not choose cotton that is stored together with pesticides and fertilizers. Some farmers will store cotton with pesticides and fertilizers for long periods of time. Because of poor ventilation, toxic gases emitted from pesticides and chemical fertilizers can damage cotton, causing a sharp decrease in the germination rate of cotton. Coaxial Breathing Systems,Pediatric Circle Breathing Systems,Medical Anaesthesia Machine Accessories,Anesthesia Machine Breathing Circuit Accessories Zhejiang Hisern Medical Device Co., Ltd , https://www.hisernmedical.com
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