1, control high defense. In early this year, the rainfall was high, the corn seeding time was short, coupled with the high density of planting, and the control of high-level defense was the key. When 7-10 leaves of corn were sprayed, the “golden sticks do not fall†and other chlormequats had obvious effects.
2, right amount of top dressing. Corn will enter the big bell-mouth period, which is the best time for top-dressing corn. After the recent rain, fertilizer should be top-dressed in a timely manner. Mu should be topdressed with 25-30 kg of urea, and deep soiling must be applied to ensure fertilizer efficiency.
3. Prevention and treatment of jade borer. According to preliminary investigations, this year, the incidence rate of corn borer damage reached 25-30%. If it is not timely eliminated, in addition to a direct reduction in production of 20-30%, it may also lead to wind failure, resulting in a more severe reduction in production. The opportune time for prevention and control is that the majority of the people should not miss out on this, and the specific granules per acre will be about 1-1.5 kilograms.
4, weeding. More rain this year, corn grass shortage is also very serious, when the corn grows up to 1 meter high when sprayed with a special herbicide to eliminate weed hazards, eliminating the competition for water and fertilizer, the amount of application strictly in accordance with the instructions for use, can not arbitrarily increase or decrease the dose .
Second, sweet potato
1, weeding. Serious grassy plots can be sprayed with herbicides (grassine, etc.), and lighter plots are used for manual retrieving.
2, control prosperous. For plots with prosperous tendencies, paclobutrazol was sprayed on the plots from mid-July to mid-August, and 300 ppm 15% paclobutrazol was sprayed once every 10-15 days.
3, top-dressing fertilizer. In the middle and late growth of sweet potato, a large amount of potash fertilizer is needed. At the end of the plot, there is a shortage of potash fertilizer. Along the cracks in the potatoes, the application of plant ash can also be followed by potassium sulphate fertilizer at a rate of about 10 kilograms per acre to prevent premature aging of stems and leaves. After mid-August, , Foliage spray 0.5% potassium dihydrogen phosphate solution every 10 days, 2-3 times, once every 10 days, plus 0.2% urea yellow leaves.
Third, peanuts
1, in addition to pests and diseases. Grassland should be removed manually in time, and the locusts should be sprayed with citric acid, methamidophos, etc. Currently, leaf spot and black spot have occurred and there is an expanding trend. It is hoped that the masses will check and prevent in time, 50% of mu. Carbendazim 50g plus fungus 100g, can also use 12.5% ​​dinizole powder 25g to add peanuts to guarantee grain full 60g, watered 40 kg spray, 7-10 days once, and even spray 2-3 times.
2, right amount of top dressing. For lack of base fertilizer and other fertilizer-neutral plots, after the rain Yu Mu topdressing about 10 kg of urea.
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