First, the preparation of the land preparation
When planting, it is advisable to use water and dry fields with high soil fertility and convenient drainage and irrigation to avoid continuous cropping. Deeply fine, fine ground, apply enough base fertilizer, fill the bottom. The varieties with good resistance, high yield, excellent quality and wide adaptability are used, and the new high-fat membrane seed dressing can effectively avoid underground pests, isolate virus infection, strengthen respiratory intensity and increase seed germination rate. Sowing at the appropriate time as required, reasonably close planting.
Second, the field management 1, seedling period: to ensure the whole seedlings, and force the strong seedlings and seedlings. In the 3-leaf stage, the seedlings were kept, and one plant was kept in each hole. After the seedlings are planted, 4-6 kg of urea and 5-7 kg of potassium chloride are used to promote the roots and grow the seedlings, and lightly cultivate the soil. 2, jointing, earing stage: promote rooting and balance strong stalks, fight for large ears, air defense stalks and lodging. 8 to 9 leaves when applying fertilizer, 15 kg of urea, 15 kg of potassium chloride, and cultivating soil and appropriate irrigation to promote the growth of aerial roots. In the big bell period (about 12 leaves), the application of manure fertilizer, 8 to 10 kg of urea, 8 to 10 kg of potassium chloride. Remove the tillers on sunny days. Spraying Zhuangsuiling at the booting stage can strengthen the physiological functions of crops, improve the quality of pollination and grouting, and increase the 1000-grain weight. Pay close attention to the water supply. The seedling stage should be kept moist, and the water supply should be ensured in a balanced manner from the jointing stage to the harvesting stage, and the water should be removed in the rainy days and properly watered in the dry days.
Third, the comprehensive prevention and control of pests and diseases
The main pests and diseases of sweet corn include sheath blight, leaf spot, tiger, corn borer, aphid, armyworm, etc. In the cultivation process, the plant protection policy of “prevention first, comprehensive prevention†should be adhered to, and the targeted drug should be added with new height. The lipid film is timely controlled. It is strictly forbidden to apply pesticides within 25 days before harvesting to ensure the quality and safety of the ear.
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