How to cover plastic film when planting sweet potato

The rotary tillage ridging and film mulching machine or artificial film mulching machine can be selected for planting sweet potato. Film selection: transparent film is usually used to cover sweet potato. Application: before ridging, 6% duxin granules can be applied to control underground insect pests, and 50% isopropachlor EC can be sprayed with water before mulching to control weeds. Ridging and covering film: apply sufficient base fertilizer before soil preparation to ensure that the soil is moist, the film should be tight when covering the film, pour enough water after covering the film, and cover the soil after planting.

First, the form of film mulching

The main results are as follows: 1. Sweet potato transplanting seedlings can be divided into two forms: plastic film mulching and plastic film mulching, which are more commonly used after plastic film mulching, usually spraying herbicide after ploughing, and planting after plastic film mulching and so on.

2. With the improvement of technology in our country, the integrated machine of rotary tillage ridging and film mulching can be used, which is convenient for field operation and helps to reduce the artificial force, especially when the wind is strong, the artificial film mulching is very difficult.

Benefits of plastic film mulching in sweet potato field

1. Film mulching of sweet potato is beneficial to moisturizing and heat preservation, so as to promote the rooting of seedlings and let the roots grow rapidly.

2. Plastic film mulching is beneficial to increase the yield of sweet potato. After plastic film mulching, the seedlings return to seedlings faster, the plants are stronger and the leaves are larger, so as to improve the photosynthesis and oxygen production capacity.

3. It is more convenient to weed and harm, so as to effectively save labor.

Third, how to cover plastic film when planting sweet potatoes

1. Select the membrane

Generally speaking, transparent film is often used in sweet potato mulching, because transparent film is conducive to the rapid increase of soil temperature and low cost, but high-quality black film can effectively control the growth of weeds and increase yield.

2. Pesticide application

(1) before ridging, about 5-8 kg of 6% Doxin granules can be used per mu, so as to effectively control underground pests such as golden needles, ground tigers, grubs, etc.

(2) in order to control Gramineae weeds and some broad-leaved weeds before mulching, spray 50% isopropachlor EC and other agents before the grass is unearthed, the dosage is about 220-250 ml per mu, 40 kg of water can be evenly sprayed.

3. Land preparation, reasonable water and fertilizer

The main results are as follows: (1) Sweet potato is not convenient to fertilize after plastic film mulching, so sufficient base fertilizer should be applied before soil preparation, mainly organic fertilizer, and should be watered in time in dry season, so as to ensure the soil moist.

(2) during fertilization, high potassium compound fertilizer can be combined with biological bacterial fertilizer, so that the nutrition of the fertilizer applied is more balanced, which can not only improve the soil, but also meet the fertilizer demand of sweet potato, so as to improve the disease resistance of sweet potato and improve the quality and yield of sweet potato.

4. Ridging and covering film

Sweet potato planting after plastic film mulching, generally can use high ridge or high ridge, the ridge surface is arched, the film should be tight when mulching, the ridge spacing is about 80-90cm, and the height is above 30cm.

5. Plastic film mulching and planting

After covering the film, first pour enough water on the fixed point, leave three leaves in the upper part of the plant, and then cover the soil to avoid sticking to the soil as far as possible.

IV. Matters needing attention in plastic film mulching cultivation

1. In order to keep the soil moist and avoid water loss, plastic film mulching must be carried out in time after ridge application.

2. In order to reduce the concentration of herbicide application, the film should be covered in time after spraying herbicide to prevent burns of seedlings.

3. When covering the film, the film must be paved and tightened to make it completely close to the ridge surface, and the film can be compacted with wet soil.