Cotton topping needs to be fattened.
After cotton topping, it is the most fierce competition for nutrients among all parts of the organs. the development of young bolls after flowering needs nutrients, the enlargement of buds and flowering need nutrients, the elongation of upper fruit branches and the emergence of new leaves and buds need nutrients. If the nutrient supply is insufficient, either the bolls in the middle and lower parts are reduced, or there is no boll in the upper part, or the plant senescence, leaf shedding and boll weight are reduced after boll setting, which can not achieve the purpose of high yield. It should be supplemented by the combination of rhizosphere fertilization and foliar spraying fertilizer in time, mainly nitrogen and potassium fertilizer, and phosphorus fertilizer properly in phosphorus deficient soil.
It should also be noted that, combined with foliar fertilizer, an appropriate amount of cotton Zhuangtiling capsule should be added to every 15 kg of liquid, which can thicken the nutrient delivery duct of cotton, increase the amount of nutrition transport, improve the swelling vitality and resistance of cotton peaches, and speed up the budding of cotton trees. circular boll opening, improve fiber quality. At the same time, it can increase the efficiency of all kinds of pesticides and foliar fertilizer by 30%.
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Which parts should be paid attention to when administering cotton medicine?
Practice has proved that management is the key to high yield of cotton. Spraying is an important link in the growth and management of cotton. Cotton pests often occur: aphids, red spiders, blind Toona sinensis, red bollworm, cotton bollworm, gold steel drill and so on. The spawning and harmful parts of these pests are different, so attention must be paid to the parts when administering medicine. Cotton seedling stage, aphids, red spiders and other harm on the back of cotton leaves, spraying pesticides, the potion should be sprayed on the back of the leaves. In the middle and later stage of cotton, red bollworm lays eggs on the back of tender tip, tender stem and tender leaf, and sets bolls.
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Cotton topping is expensive at the right time.
Cotton has unlimited growth habits, under certain temperature conditions, the top continues to grow and elongate, and continue to differentiate into new stems, leaves and fruit branches. Topping is to knock off the top manually, so that it no longer produces new fruit branches, so that most of the cotton bolls can open bolls before frost. Therefore, this is a key task to manually regulate the growing period of cotton. Before topping, cotton plants had apical dominance, giving priority to the supply of water and nutrients, while after topping, priority was given to the organs with the fastest growth and development. It can be seen that topping is related to the transport and distribution of nutrients in cotton plants.
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