Why does this year's wheat get back to green
In response to questions raised by farmers in the main wheat producing areas of northern Fujian Province this year about the importance of early return of green manure to wheat and which greenfield crops need to be returned, Professor Hu Chenglin, deputy head of the Provincial High-yield Experts Group, specifically answered the questions. “This year’s emphasis on early return of green manure to wheat is highly targeted.†Hu Chenglin said that because last autumn lasted 50 to 60 days, the sowing date of wheat was elongated, and a considerable part of it was late sowing or late sowing and late emergence. In wheat fields, seedlings are small and weak, usually 3 leaves to 3 leaves and 1 heart single seedlings are overwintering. This kind of small weak seedlings are compared to normal wheat fields with more than 5-6 leaves and 2 to 3 tillers in the same wheat field. In the case of production inputs such as fertilizer and fertilizer, at least 200 pounds or more will be reduced per acre. The reason is that there are too few green leaves per unit area that receive sunlight, and light leakage is serious. In the process of growing wheat, it is necessary for the root system to absorb mineral nutrients from the soil, and at the same time, it is necessary to create organic nutrition through the green leaves, and the two are coordinated with each other. For example, early return of green manure, promote small and weak seedlings to grow rapidly after “springâ€, increase the number of panicles per acre by 50,000 or so, then recover more than 100 pounds of output. The defense of pests and diseases will eventually yield a better harvest. Professor Hu also reminded farmers and friends that in fields with more than 5 to 6 leaves per plant, 0.5 to 600,000 or even 700,000 to 800,000 total stem populations per acre, must not be returned to green manure, otherwise it would increase too much springå½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½ å½. Some early crops in wheat have emerged with different seedlings, and then they come out again after raining. There is a big gap between them and large seedlings, and they can also apply “eccentric fertilizers†to the seedlings. In addition, in some wheat fields, the weeds were not removed before the year, we must pay close attention to chemical weeding after the temperature rise, especially spring varieties of wheat, jointing period earlier than the half-time varieties, to be removed before the jointing. Hospital Bedside Table,Overbed Rolling Table,Hospital Overbed Table ,Overbed Table With Wheels Active Life Healthcare Co.,Ltd , https://www.alh-med.com
Professor Hu said that the return of green manure to wheat is a kind of fertilization habit used by farmers in our province. Usually, the rain and snow conditions occur around the Spring Festival. When the soil moisture is good, urea is applied to the wheat fields. In some places, carbon ammonium is applied to the caves with rods in some places. . This is a method of fertilizing wheat in the first seventies and eighties of the last century when it was farmed mainly with 300-500 pounds per mu. Because of the slow fertilizer effect of farmyard manure, it was absorbed and utilized by wheat roots at lower temperatures in autumn and winter. Limited, it is necessary to return the green fertilizer to help the seedlings in the early spring and strive for more spikes. In the 1980s and 1990s, with the increase in the use of nitrogen and phosphate fertilizers in wheat fields, farmers in our province used to use a one-time application of all chemical fertilizers (ie, “one bombardmentâ€), and after the emergence of proper and appropriate sowing wheat, In the case of growing several tillers before and after wintering, the farmers still use this habit of returning to green manure, which often results in a large number of overgrowths in the spring wheat field, resulting in a large population, early closure of the fields and closed ventilation, and poor light transmission. The full-grain growth of the wheat base results in aggravated field diseases and late lodging. The original yield can be as high as 800 to 1,000 pounds per mu. The result is only 500 to 600 pounds. This is an important reason why wheat production in many regions is at low and medium production levels.