How to prevent sweet potato underground pests
Sweet potato is vulnerable to underground pests during its growth, which can cause rots and reduced quality of the sweet potato. When it is serious, it cannot be eaten or even lost production. At present, during the expansion period of sweet potato, if the following methods can be adopted to control pests, the yield and quality of sweet potato can be improved. 1. Prevention is the mainstay. The root leaching application of superphosphate 25-30 times the leachate and dry pure grass ash mixed leaching clear liquid, apply every 10-15 days, continuous application of 2-3 times per square meter soil fertilization solution 5-6 kg . When the soil is wet after the rain, or in the morning and evening, it is good to prevent it from being applied. If 80-100 times of magnesium sulfate can be added, it will not only enhance the insect-resistant ability of sweet potato, but also promote the rapid expansion of sweet potato, increase starch accumulation, and improve the quality and storage stability. 2. Combine prevention and control. Foliage was sprayed with 1000 times liquid, sprayed every 10-15 days, and sprayed 3-5 times. When spraying, all leaves should be uniformly sprayed, and it is advisable to start the flow of water through the stems and leaves to the root. Only in this way can the underground pest be killed and the potato block protected. Can also be applied to the root of tea bran water 40-50 times the liquid, spraying every 7-10 days, continuous application of 2-3 times, 10-15 kg per m 2 dripping, can kill the underground pests, and It can timely supplement high-quality organic fertilizers, promote the expansion of tubers and increase the output of sweet potatoes. Facial Cream,Face Moisturizer,Face Whitening Cream,Face Cream For Women Guangzhou Lingxue Cosmetics Co., Ltd , https://www.lxgj188.com