How can sweet potato grow high yield? Sweet potato mulching cultivation method
Uncle Zhang, who planted sweet potatoes, recently chatted with me about it. He said that some people in the same village planted sweet potatoes and cultivated with mulch. They can be regarded as long-term cultivation of seeds. The cultivation of garlic is useful for mulching, and the sweet potato is also there. There are many ways to produce high sweet potatoes. The same method of cultivating sweet potatoes with the mulch film can also increase production, in order to answer Zhang’s doubts. Today we will talk about the method of cultivation of sweet potato mulch. The main reason why sweet potato mulching cultivation can increase production is because mulching cultivation is generally more than 20 days earlier than bare soil cultivation. The early growth period of the seedlings is fast, and it enters the ridge-sealing period about half an hour earlier. The film has the effect of warming and protecting the sweet potato, which can effectively protect the sweet potato. The underground potato is grown earlier than the bare land to grow sweet potato in each growth stage; sweet potato mulch Cultivation can effectively alleviate the contradiction between the above-ground and underground growth in the mid-planting period, which is conducive to the growth of the sweet potato underground roots, thereby increasing the yield of sweet potatoes. When planting sweet potatoes, pay attention to these points when mulching cultivation 1. Choose high-yield varieties, early breeding and early planting. The time for breeding is 15 to 20 days ahead of the traditional breeding time, and it is before the vernal equinox; the time for planting sweet potatoes is about 10 days earlier than that of bare ground. 2. The best choice for sandy loam is to make the ridge at a ground temperature of 15°. The ridge distance is 90 or 100 cm. 3. According to the soil nutrient status, apply organic fertilizer, make up various elements, and reapply phosphorus and potassium fertilizer. Generally, 5000 kg of organic fertilizer is required per mu of land. 4. When planting sweet potatoes, when planting mulch, it is necessary to plant the mulch and then cover the membrane. It can be planted in the morning, covered in the afternoon, and then the saplings are taken out from the membrane, and the membrane holes are pressed with soil. Rooting roots of 40 mg/L were used before planting. 5. In the middle and late July of each year, when the seedlings have a prosperous trend, spray the concentration of 300 mg / liter of 15% paclobutraz 2 to 3 times every other week, and control it. 6. For plots with serious weed damage, use 50% acetochlor EC 50-100 g to spray 50 liters of water evenly on the ground before planting. 7. Strengthen management in the middle and late stages and harvest at the right time. Finally, we must pay attention to the management of the ground according to the growth of sweet potato seedlings, and promote the hand-made vines. Spray 2~3 times of sweet potato swell in the growing season, add 0.3% potassium dihydrogen phosphate, yellow leaves and 2% urea; the growth of roots in the late growth stage of sweet potato is faster, must be rooted after the first frost, roots Harvest when growth is stopped to increase production.
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