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Potato bud period management points
Potato is one of the important food crops in our province, with a large planting area. However, the management of the details of the potato field is often overlooked, such as the bud period, which is an important period for the simultaneous growth of the underground and underground parts. At this time, the potato needs the most fertilizer and water, and strengthens the field management during the bud stage, which is a key measure to obtain high yield of the potato. The measures should pay attention to several aspects:
1. After timely cultivating the potato, it is necessary to strengthen the cultivating, carry out the shallow ramming, and carry out the high cultivating soil with the cultivating, and the soil is as high as 15-20 cm.
2. Appropriate topdressing should be applied to the plant with short and weak yellow, and apply 5 to 10 kg of urea per mu. For the field where the plant grows vigorously, phosphorus and potassium fertilizer should be applied, and 15 kg of phosphorus fertilizer and grass ash should be applied. Or apply potato special compound fertilizer 15 - 20 kg.
3. Spray the root buds during the bud period, and choose to spray the roots outside the sunny afternoon, spray 0.3% potassium dihydrogen phosphate and 0.3% manganese sulfate mixture, or use 15% paclobutrazol wet powder 150g and water 15kg. After stirring evenly, spraying 50 kg of the application liquid can make the potato plant dwarf by one-third, the leaf color becomes dark green, increase the utilization of the leaves by the leaves, and increase the proportion of commercial potato. Spray 0.3% - 0.5% potassium permanganate solution in the whole field to prevent potato black stem disease and viral disease.
4. Integrated pest management The potato enters the bud stage, the field grows sullen, and the high-humidity environment is prone to occur, resulting in a large area of ​​late blight. It can be sprayed with 64% of the ecstasy of 500% per acre or 72% of the frost. The mildew water agent was sprayed 800 times for prevention.
5. In the bud period, 15% “papyrazone†wettable powder 15g can be sprayed with 45kg (50ppm) to control the upper part of the ground, which helps to make more potato chips. During the full bloom period, the application of potassium dihydrogen phosphate 100 to 150 g to 50 kg of water can promote the expansion of potato chips.
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