Doing Well Three Preventions to Increase Maize Yield
The characteristics of high-yield plants in the ear stage of summer maize are: thick stalks, short internodes, broad and thick leaves, strong leaves, and strong green root system. If the leaves have a tendency to turn yellow at the ear stage, premature aging of the defertilizer should be prevented. In the management, it is necessary to chase stalk and grain fertilizer, topdressing 5 to 10 kg of urea per acre, using acupuncture or ditching, applying soil immediately after fertilization to prevent evaporation loss of fertilizer, 0.3% to 0.5% at the filling stage The potassium dihydrogen phosphate or 5% superphosphate calcium leaching solution was sprayed on the leaves, and sprayed with 50-60 kg of fertilizer solution per acre evenly, and the yield increase effect was significant. Drought prevention Maize heading and flowering period is the period with the most water requirement in a lifetime. It requires the soil water holding capacity to be about 70% to 80%, and the relative humidity in the field is about 65% to 90%. If there is insufficient moisture, high temperature and drought will affect the development and vigor of maize pollen and filaments, affecting pollination and fertilization, and when severe, will cause a decline in the seed setting rate of maize and a decrease in yield. In the case of high temperature or extreme drought, the viability of pollen is easily lost; high temperature and drought easily make the filaments dry and lose their viability. Pollen on the stigma difficult, or after germination because the filament can not supply enough water, resulting in slower pollen tube to the ovary, only a small amount of fertilization after pollination, the final seed setting rate is not high, the formation of lack of grain. Therefore, when the corn blossoms, in the event of drought, it should be timely irrigation and drought, through irrigation, add water, adjust the humidity in the field. Irrigation should be carried out in the evening. Ditch irrigation should be adopted and flood irrigation should not be used. Pest control During the middle and late summer maize growth, the main insect pests are corn borer and armyworm. Corn borer at the end of the leaf stage, when the strain rate reaches 10%, 0.5% methamidophos granules can be used 0.5 kg, 50 kg of fine soil can be applied to the big bell mouth; at the heading stage, there are insects after corn silking and flowering. When the strain rate reaches 20%, 90% of trichlorfon is used per acre and 100 kg of water is sprayed to prevent and control sprinkling. When there are 50 to 100 stick insects in the late growth period of the corn field, 2.5% of trichlorphon powder can be used, 2 to 2.5 kg per mu. Puppy Shampoo,Flea Shampoo,Flea Shampoo For Dogs,Homemade Dog Shampoo Jiangxi Welton Pet Products Co., Ltd. , https://www.weltonpetcare.com