The primary task of potato seedling management is to preserve the seedlings and strengthen the seedlings, and strive to establish a high-yield shelf in the drought year. First, timely soil conservation seedlings. Most of the potato field soil is yellow loam soil, large soil particles, poor water holding capacity, and rapid evaporation of soil moisture. At present, the dry soil layer in Weining County is 10-15cm, while the size of potato seed potato is about 10cm. After emergence, it will be vulnerable to drought. For such seedlings, the seedlings should be ploughed in shallow soil in a timely manner, cover the soil layer thickly, cut off the soil capillary, slow the evaporation rate of water, extend the survival time of the seedlings, and try to preserve the seedlings. Coverage time is controlled at 30% bud top soil. Second, timely fertilizer to promote strong seedlings. There are some nocturnal soils in high altitude areas, which are mostly of loam type, with small soil particles and strong soil water retention capacity. At present, soil moisture content is better. After the emergence of this kind of plot, it is necessary to apply 10 kg of urea to the top of the plot, and quickly raise the seedlings to ensure strong seedlings. The fertilization method is applied to the seedlings, and then cultivating and earthing. Three-leaf anti-transpiration agent spray. After fully spreading the potato leaves, the anti-transpiration agent can be used for foliar spraying. Anti-transpiration agent can form a protective film on the surface of the blade to slow the evaporation of water. Anti-transpiration agent can use sodium bisulfite, humic acid, calcium chloride, fulvic acid (FA), triadimefon, crown ether, etc., according to product specifications. Fourth, check seedlings replant. For plots with less than 30% seedlings, crops such as early-mature corn and clouded soybeans can be planted. Through intercropping between crops, land use efficiency can be improved, losses can be reduced, and profits can be increased. If there is effective rainfall soon after emergence, it can also be cut from the underside of the axillary branches of the normal potato plants on rainy days to reduce seedling deficiency. Fifth, underground pest control. After sowing and during the seedling stage, the potato is vulnerable to underground pests, which causes bad seed and seedlings. Therefore, it is necessary to draw up a plan to prevent and control underground pests. The underground pests are mainly ground tigers. For under 3 instar tigers, 40% phoxim 800 times or 2.5% deltamethrin EC can be sprayed. Eas Self Alarm Tag,Alarm Rf Tag,Anti Theft Security Tags,Tag Alarm Group WENZHOU BOSHINE ELECTRONIC SECURITY CO.,LTD , https://www.cnboshine.com