1. Shallow topdressing and skillful watering: When applying fertilizer, apply shallow soil layer for yam root system to absorb. Shallow topdressing or less topdressing can ensure high yield of yam, and yam should not be too dry and afraid of waterlogging. If it is too dry, it will seriously affect the swelling of yam. Spraying new high-fat film can reasonably match the distribution of water and fertilizer.

2. Scaffolding should be firm: scaffolding should be erected in time after it appears. The scaffold is about 2m high, with a herringbone front and diagonal cross on both sides. Every 7-8m, it should be reinforced with thick bamboo poles or wooden sticks. In short, it must be firmly erected to prevent toppling.

3. Pest control: Pests and diseases should be kept up. The pests and diseases of continuous cropping plots are serious, and the pests and diseases of planting plots in the first year are light. After the yam vine is put on the shelf, a new high-fat film should be added to the surface of the plant while spraying pesticides to improve the efficacy, prevent the infection of germs and expel pests.

4. Growth period: Top dressing of yam is mainly in the middle and late growth period, and less fertilizer is needed in the early stage. When local tubers enter the peak period of vigorous growth, they should be topdressing again 1 time, and spraying the medicinal plant Gendalin on the leaves, which can promote the transportation of photosynthetic products on the leaves to the roots, improve the nutrient conversion rate and soil loosening ability, ensure sufficient nutrients needed for tuber elongation and expansion, and greatly improve the content of effective substances, thus achieving the goal of bumper harvest.