Li Cheng, a reader of Guchengdian Township, Baixiang County, asked how to manage wheat in the middle and later stages and promote the stable and high yield of wheat.
Li Junfa: In the period from wheat heading to maturity, wheat roots have become weaker. In order to achieve high wheat yield, measures must be taken in time to adopt measures such as rooting, protecting the leaves, and preventing pests and diseases, etc. Re-increase the yield. Tests have shown that in the later period, if the coincidence management is generally comparable to the increase of 30-50 kilograms per acre in the wheat fields, in general, the following stages of wheat growth should be achieved:
Coinciding with grouting water. When wheat enters the late growth stage, it is in the grain filling stage. At this time, wheat needs water, that is, sufficient sunlight ensures that the leaves can effectively carry out photosynthesis and accumulate sufficient nutrients for grouting. The appropriate moisture condition is that various nutrients can be transported normally. The guarantee of wheat ears. At this time, if drought occurs in early summer, the soil moisture can not meet the needs of wheat grouting. In particular, the lack of water at the initial stage of grouting will cause the grouting to stop the grain degradation and reduce the yield. Therefore, the water should be replenished timely. Generally when the soil moisture in the wheat field accounts for 60%-70% of the field capacity, it is necessary to make up the water. When watering, the water should be filled with small water, avoid bountiful flooding, and avoid over 3 levels of windy weather within 3 days after irrigation to prevent lodging. , resulting in reduced production.
Clever panicle fertilizer. In the late growth period of wheat, the absorption capacity of its roots has gradually weakened, and sometimes the upper leaves will also affect the grouting due to premature aging. It is advisable to adopt quick-effective sprays for the recovery from roots. Generally, 0.2%-0.3% of wheat should be sprayed from the heading stage to the grain filling stage. % of potassium dihydrogen phosphate solution, 75-100 kg per mu. Note that spraying fertilizer should not be delayed as soon as possible, and the concentration should not be too large.
Cleverly prevent pests and diseases. Since wheat heading is a concentrated occurrence period of rust, sheath blight, head blight, and aphids. These pests will not only affect the life of the leaves, but will also hinder the normal grouting. Therefore, it should be controlled in time. Available 20% triadimefon and 40% omethoate each 40 grams, 50-70 kilograms of water mixed spray, control effect is better.
Of course, while carefully watering, supplementing fertilizers, and preventing insects, we must also step up efforts to do a good job of "two defenses," that is, while strengthening drought prevention, we must also pay attention to preventing the occurrence of disasters. If it is rainy, it will not only limit the photosynthesis of wheat leaves, but also lead to the lack of oxygen in the soil. The rate of decline of wheat roots in anoxic conditions is faster than that of drought, which results in degeneration of grain. Therefore, attention should also be paid to clearing the ditch and lowering the groundwater level so that there will be almost no water in the wheat fields after the rain.
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