Strengthen the management of water and fertilizer and grow a good yam

In the process of yam cultivation, due to improper fertilizer and water management, it often causes waterlogging or drought; the lack of nutrition supply in the growing period seriously reduces the yield of Chinese yam, which directly affects the yield.

The main results are as follows: 1. the most important topdressing in the late growth stage is mainly in the middle and late growth stage, and less fertilizer is needed in the early stage. In order to ensure the high yield of Chinese yam, it is generally applied for 2 or 3 times. In the later stage of growth, Diguo Zhuangtiling + 0.2% potassium dihydrogen phosphate and 1% urea were sprayed on the leaves to ensure adequate nutrients for tuber elongation and expansion. By spraying "Diguo Zhuangtieling", it can meet a large amount of nutrition supply at flowering and fruit stage, thicken the underground nutrient transport conduit, increase the amount of nutrient transport, and improve the expansion speed of underground fruit, and it is efficient and non-toxic. Second, the control of water balance is the key for the aboveground parts of Chinese yam to like high temperature and dry, afraid of frost, waterlogging and drought, if too dry will seriously affect the expansion of Chinese yam. The watering time is from mid-April to late May, which is usually watered once every 10 days. After late May, watering should be properly watered according to soil moisture. Too much watering can also cause rust, causing early defoliation and affecting root yield. It is suggested that farmers spray new high-fat film of plant protective agent on yam, spray it on the leaves to form a protective film, known as "plant health transparent clothing", disinfect and prevent disease, resist drought and hot wind, and resist waterlogging. This product plays a physical role and will not produce drug resistance. When planting Chinese yam, we should pay special attention to the management of the above two points, increase the amount of nutrient transport, and enhance the resistance of Chinese yam in order to produce high-quality yam and increase economic income.