Technical points of planting sweet potato in autumn
1. Ploughing over the land, deepening the plough layer and improving soil ventilation before sowing are beneficial to the expansion of potato lumps. The application of sufficient base fertilizer, mainly organic fertilizer, combined with nitrogen, phosphorus and potassium fertilizer, can be sprayed with new high-fat film to improve fertilizer efficiency, preserve soil moisture and prevent soil consolidation.
2. Select good varieties with disease resistance, timely early planting and reasonable close planting. Strengthen field management, apply nitrogen fertilizer lightly, and spray 800-fold liquid of new high-fat film to improve fertilizer utilization efficiency; spraying Diguo Zhuangtieling before flowering, young fruit stage and expansion stage of sweet potato respectively to improve the development rate of underground fruit and promote the high yield and high yield of sweet potato.
3. Black spot disease, vine cutting disease, grub, golden needle worm and other diseases and insect pests are easy to occur in the growing period of sweet potato, so targeted pesticides should be used in time to protect the growth of sweet potato.
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