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Second, wheat ridge sweet potato interplanting key cultivation techniques: (a) select the medium and short vine-type varieties. At present, Henan Province is promoting the use of starch processing with the fine varieties are: Yushu 7, Yushu 12, Yushu 13 and Meiying 1; edible varieties are: potato 4th, Beijing 553 detoxified potato, Su Potato No. 8 and so on. (B) to lay a good foundation for interplanting. One is to deepen the plough layer in wheat fields and apply basic fertilizer. The second is to reserve reserved lines for wheat sowing, leaving 27 to 30 centimeters wide ridges in each buckwheat. (C) Interplanting time to grasp the late wheat sets, the principle of early wheat sets. Generally, the irrigated land is later than the dry land, and the wheat field with a yield of 250-300 kg per mu should be interplanted in mid-May. When the wheat field with a mu yield of 200 kg or less is interplanted, the seedlings can be interplanted in advance in early May. . (d) interplanting methods. Make a triangle divider with a bamboo basket to separate the rows of wheat. Use a pointed stick to incline the holes between the rows and insert the strong seedling into the hole. (e) Interplanting density. The planting density should be greater than the summer planting density, and the general planting density is 3500-4000 plants per mu. (6) Early field management. After the harvest, we must promptly cultivate the stubble in the field. The wheat bran should be covered in the field. According to the seedling conditions and fertility, the crop should be topdressed. Generally, 250 kg or more of wheat should not be used for excessive nitrogen fertilizer. The special fertilizer for sweet potato should be 20-30 kg per mu; For a plot below 250 kg, 40 kg of ammonium bicarbonate or 15 kg of urea and 20 kg of phosphate fertilizer should be applied per acre; the fertilizer should be dominated by phosphorus and potash fertilizers, and the application of phosphate fertilizer and potassium sulfate must be 15-20 kg per mu. Potassium dihydrogen phosphate 1.5 to 2 kilograms, rooting in water during the expansion of tubers. We must also keep the fields free of weeds, combine cultivating topdressing for ridges, and conduct drought prevention and drainage in the middle and late period to prevent and control leaf-feeding pests.
First, the benefits of wheat ridge sweet potato interplanting: (a) interplanting summer potato production highlights. According to the production demonstration survey, sweet potato planted in wheat ridge generally produces about 30% more sweet potato than wheat. (b) Increased the survival rate and drought resistance of sweet potato. Interplanting sweet potatoes because of the sun's wind shield, the potato seedlings from the sun and wind, the survival rate is high. (c) Long planting time is conducive to planting after rain in dry land. (D) Set sweet potato plant early harvest early. Generally can be harvested 20 days in advance. (e) The method is simple and easy, no investment, and easy to accept.