What are the characteristics of fertilizer requirements for winter wheat and summer corn? Experts: Both crops have experienced seedling-fast-growth-maturity throughout their lives. The rapid growth period, that is, the beginning of winter wheat to the jointing stage, the jointing period of summer corn to the big bell-mouth period, is the key period to determine the number of grains per panicle, and requires a large amount of fertilizer, which is the focus of top-dressing; as for seedling and late-stage dressing Depending on the fertility of the soil, the amount of basal fertilizer and crop growth, it may be determined as appropriate. How to fertilize winter wheat and summer corn? Experts: fertilization scheme for winter wheat with a yield of over 400 kg per mu—basal fertilizer: 1000-3000 kg of mature organic fertilizer for Mushi, 25-35 kg for general-purpose or low-nitrogen-type compound fertilizer, or on the basis of applying organic fertilizer. Application of diammonium phosphate and nitrogen and potassium fertilizer, that is, 15 to 20 kg per acre diammonium, urea 5 to 10 kg, potassium chloride 3 to 5 kg. Top dressing: After getting up to the jointing stage, topdressing 15-20 kg of urea. The fertilization plan for summer maize— when planting or seedling (4 leaf stage), Mushi N-type compound fertilizer is 15-20 kg; or with diammonium, urea, 4-6 kg each, potassium chloride 8-10 kg. From the big bell mouth to the jointing stage, apply 15-20 kg of urea once or in several portions. The thin and weak seedlings are mainly in the jointing period, while the strong ones are mainly in the big bell mouth period. Why do you have to top-dress fertilizers at the seedling and late stages? Experts: Seedling growth is slow, the amount of fertilizer required is relatively small, but sensitive to deficiency, is the critical period of nutrition, if the soil fertility is low, the base fertilizer is insufficient, we must apply some quick-appropriate fertilizer. Among them, special attention should be paid to wheat before winter and the size of the population, to prevent excessive nitrogen fertilizer caused by winter before the increase in the effective tiller and the occurrence of frost damage; the summer corn seedlings because of phosphorus is the critical period of nutrition, special attention should be paid as soon as possible after the appropriate amount of phosphate fertilizer. In the later period, after the winter wheat flag was picked, after the summer corn was drawn on the tassel, the application of the appropriate quantitative fertilizer could increase the grain weight and the grain protein content, which was especially important for strong gluten wheat and high-quality corn. However, the amount of fertilizer should not be too large, generally 5 to 10 kilograms of urea can be applied to mu, and it is also possible to spray 1 to 2 times of 1% urea and 0.3% of potassium dihydrogen phosphate. What are the special fertilization requirements for the winter wheat-summer corn rotation? Experts: During the fertilization period, some peasant friends are greedy for early stage seedlings and convenient fertilization. Therefore, the fertilization period is early and nitrogen fertilizer is high. Although the early stage seedlings look good, they often lose production due to defertilization or lodging. Another problem in production is that due to the large height of the corn plants in the later period and the difficulty in top dressing, they are left in the ground and the result is serious fertilizer waste. The third problem in the fertilization method is that the seed fertilizer and the top dressing are in contact with the seed or are too close to the seedling, so that the phenomenon of seed burning and seedling injury occurs from time to time. The seed fertilizer should be separated from the seed and deep-sloped to a depth of 5-6 cm. The topdressing location is related to the age of the plant and the depth of the root system. Generally, it should be applied to a soil layer about 10 cm from the plant and 6 cm deep. Why is the use of low-nitrogen type wheat base compound fertilizer? Experts: Since phosphorus fertilizers are mainly given to winter wheat, summer corn is mainly used for post-effects, so winter wheat can use low-nitrogen (or high-phosphorus) compound fertilizers. If the soil fertility is low, a general-purpose compound fertilizer with a higher nitrogen content than the low nitrogen type can also be used. What is the difference between high-gluten quality wheat and normal wheat top dressing? Experts: The application of nitrogenous fertilizer at later stages can increase the protein and gluten content of wheat flour. Compared with common wheat, strong gluten wheat has to reapply nitrogen fertilizer at the jointing stage or on the basis of normal nitrogen application, and then add 4 to 5 kg of urea at heading to anthesis. During the flowering period, it would be of great benefit if one or two sprays of 1% to 2% urea solution, 2% to 4% superphosphate solution, or 0.2% potassium dihydrogen phosphate solution can be sprayed. (This issue of experts: Senior Advisor of Sinofert China Agricultural University Professor Wang Xingren) Paddy Planting Machine,Rice Transplanter Price,Manual Rice Transplanter,Paddy Transplanter Machine Henan Qianli Machinery Co.,Ltd. , https://www.chalionagri.com