From the beginning of the cotton flowering period to the period of vigorous growth, more fertilizer, more nitrogen, and higher intensity are required. From this point onwards, the amount of nitrogen uptake accounts for 60% of the total nitrogen uptake during the entire growth period. The phosphorus and potassium needed during this period are also It accounts for more than half of the total. The principle of fertilization for high-yielding cotton is to timely manage fertilizers on the basis of basal fertilizers. In recent years, the development trend of cotton high-yield cultivation and management is to achieve high yield by increasing the density of tannin-cotton under the conditions of systematic control. This method of creating high-yield crops is particularly prominent in the Xinjiang cotton area. In addition, in order to ensure the continuous increase of the total output of cotton and food crops in the Yangtze River basin and North China cotton-growing areas, the trend of shortening the growth period of cotton and vigorously developing summer sowing cotton has emerged in recent years. For these two new developments, there must be new countermeasures in the management of cotton fertilizers. In the past, spring planted cotton was the main type, which emphasized the shift of topdressing (mainly refers to nitrogen fertilizer), and the objective was to obtain three types of peaches, that is, the cotton plants were planted with peaches, full blooms, and high yields characterized by autumn peach tops. The principle of fertilizing the center of gravity of the fertilization of flower and bell fertilizers and compensatory top dressing fertilizers was proposed. However, the situation is different now. Under the conditions of systemic control of dentinosamine, early application of bud fertilizer has a good effect on the high yield of spring cotton, such as early enhancement of root vigor. Therefore, the use of chemical-control technology provides a guarantee for adjusting the top-dressing time. Topdressing before ridge closure in cotton fields can reduce labor and mechanical damage to cotton plants. In particular, summer sowing cotton or short-season cotton must emphasize the early application of fertilizer in the bud stage. Cotton seedlings are made early to avoid the threat of late maturing. In short, under the premise of adopting systematic control, the basic fertilization is the main method for fertilizing cotton in the whole process, and the principle of appropriate early application of top dressing is applied. In recent years, the high-yielding model field of cotton has shown that, under conditions regulated by the use of dilute amine, appropriate early application of fertilizer is beneficial to the growth of roots and the prevention of premature aging of roots. Generally, it is feasible to apply topdressing fertilizer in combination with alfalfa in advance of the top-dressing period of summer sowing cotton (4~5 leaves). It is also advisable to top-dress at the early flowering stage (having 1-2 young bells). The top-dressing or early-flowering top dressing is mainly supplemented with appropriate amount of nitrogen fertilizer (such as 10~15 kg/mu urea), but it is not applied in low-potassium soil, the level of effective potassium is low (such as strong sandy loam) or in base fertilizer. Potassium fertilizer and organic fertilizer in the cotton field, it should be added 5 ~ 6 kg of potassium chloride to be good, then potassium can be achieved to promote the role of boll production. In particular, for some plots planted with insect-resistant cotton varieties, the amount of potash fertilizer is higher than that of ordinary cotton varieties to meet the need for high yield. Fertilizer application method should be mixed with fertilizer and timely irrigation, do not form urea so as to avoid causing loss of volatile or smoked cotton leaves. In the production, urea is often sprinkled on the ground and it rains. It is neither covered with soil nor irrigated in time. This method of fertilization is unscientific. In addition, for the high-yield and super-high-yielding cotton fields, if there is a case where growth momentum weakens or automatic capping occurs in the later period of cotton bolls, urea must be added in an amount of 5 to 8 kg in order to prevent the premature death of the cotton plants from fighting for autumn peaches. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone GMP ATS Injection, Tetanus Antitoxin, Tetanus Toxoid ,Tetanus Antitoxin Injection, Antitetanus, Refined Tetanus Antitoxinsupplier in China Tetanus Antitoxin,Tetanus Toxoid,Tetanus Antitoxin Injection,Antitetanus&Refined Tetanus Antitoxin FOSHAN PHARMA CO., LTD. , https://www.fspharmamedicine.com