The amount of fertilization in lotus root field base should be determined according to the soil fat and thin, generally choose loose soil, fertile, organic matter rich, convenient irrigation and drainage plots, combined with soil preparation applied per acre of animal manure 2500-3000 kg, diammonium 25 kg, potassium sulfate 10-15 kg, 50-100 kg of quick lime, 50 kg of superphosphate, 150 kg of cake fat, can be flat. Lotus roots need to be topdressed 3 times throughout the growing season. For the first time in 1-2 leaves (approx. 25 days of colonization), combined with cultivating and weeding, 3-5 kg ​​of urea per mu or 750-1000 kg of human waste was administered. The second time there are 5-6 leaves (40 days after the contract is planted, which is about to be sealed), apply 20-25 kg of compound fertilizer, 5 kg of urea, or 800 kg of human fecal urine fertilizer per acre. The third top-dressing is carried out when the leaf is stopped. At this time, the scab begins, which means that the manure fertilizer is applied. The manure-fertilizer is applied to 1000-1500 kilograms per mu and the cake fertilizer is 30-50 kilograms. The third top-dressing is mainly supplemented with potash fertilizer, applying about 10 kilograms of potassium sulphate per mu, or spraying 0.2% potassium dihydrogen phosphate foliar fertilizer, spraying once every 7 days. Fertilizer should be selected as sunny, windless weather, avoiding the noon during the hot sun, putting shallow water level, which is beneficial to the infiltration of fertilizer into the soil, and then irrigation to the original depth. In the deep water field, the fertilizer is easy to lose, so it cannot directly apply liquefied fertilizer. Solid fertilizer should be applied, that is, green grass fertilizer should be re-applied and buried in the mud pond. When topdressing fertilizer, the chemical fertilizer and river mud should be fully mixed to make a muddy mass and then applied to Putian. Lacto Helveticus,Lactobacillus Helveticus,Lactobacillus Helveticus Powder,Lactobacillus Helveticus Probiotic Jiangsu Biodep Biotechnology Co. ,Ltd. , https://www.mbioda.com