In corn production, baldness and lack of kernels often occur due to poor pollination, poor nutrition, low temperature, and pest damage. Generally, land production is reduced by 10% to 30%, and severely up to 50%. So, how to prevent corn tipping?
1. Strengthen field management. Before and after corn silking, a small number of small strains, weak strains, and empty stalks with no knotting ability are removed, which can save water and fertilizer, but also facilitate ventilation and light transmission in the field, and reduce corn tipping. The fertilizer-free plots can be suitably top-dressed, and the average mu recovers 10 kg of urea.
2. To male. The time of detasseling should be appropriate when tassels have just been removed from the parietal lobe. The number of detassels can be detasseled by interlacing or septa, not too much, otherwise it will cause poor pollination and cause empty ears.
3. Assistant pollination. During the flowering pollination period of maize, in case of adverse weather such as high temperature, drought, strong wind, and rainy weather, artificial pollination is carried out by pulling ropes and walking along the lines so that the rope will drive the tassels to swing or pollen. In the pollinator, align the filaments on the ears and shake them gently to make the pollen grains evenly on the filaments. Auxiliary pollination should be carried out after sunny days with no wind or breeze, and should be carried out at about 10 o'clock in the morning, once a day, 2-3 times in a row to increase pollination opportunities, increase seed setting rate, and reduce baldness. , lack of grain.
4. Control pests and diseases. In case of leaf spot, 50% thiophanate-methyl wettable powder 800 times solution or 50% carbendazim wettable powder 800 times solution can be used for spraying; 10% imidacloprid wettable can be used when corn borer occurs. Powder 3000 times liquid spray prevention and treatment; when double leaf fly leaf beetle occurs, 20% speed kill dicamba 2000 times, or 2.5% cyhalothrin emulsion, or 20% cypermethrin 1500 times Liquid spray control.
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