Agricultural plastic film refers to the direct coverage of the cultivation of furrows or near the ground of the thin plastic film. The general thickness is 0.008 to 0.015 mm and the base resin is polyethylene.
The use of agricultural plastic film mulching can improve the soil and near ground temperature and water conditions, play to improve soil temperature, maintain soil moisture, improve soil properties, Agriculture Mulch improve soil nutrient supply and fertilizer utilization, improve lighting conditions, reduce weeds and Pests and diseases and other effects.
1. Insulation warming, promote the decomposition and release of soil nutrients
2. Moisturizing, improve the survival rate
Field of soil moisture, in addition to irrigation, the main source of rainfall. After the film is covered, the evaporation of soil moisture is reduced and the loss is slow due to the obstruction of agricultural plastic film. After falling into the soil table, On the other hand, Agriculture Mulch agricultural film can also be too large rainfall, to prevent a large number of rain into the ridge, can play the role of waterlogging.
3. Promote growth and development
Application of plastic film mulching, soil temperature and humidity increased, Agriculture Mulch is conducive to early onset, promote the growth and development of plants. The film growth period is less than a week.
4. Reduce the risk of weeds and aphids
Agricultural mulching can inhibit weed growth. Generally, the coating is more than a third of the weeds that are not covered by the film, and the effect of controlling the weeds is more pronounced if the herbicide is used in combination. Spraying the herbicide, the cover of the membrane than the unweiled weeds can reduce 89.4 ~ 94.8%. Agriculture Mulch Agricultural film has a reflective effect, but also can partially repel aphids, Agriculture Mulch inhibit the breeding of aphids, reduce the harm and disease transmission.
5. Negative Effects of Plastic Film Mulching
Agricultural film mulching has both positive and negative effects, for example, although the plastic film mulching has the effect of water retention, but it hinders the external precipitation into the ridge, and in some areas, if the ridge or other measures are not taken, In the long run of water deficit, Agriculture Mulch affecting the normal growth; if encountered continuous rainfall is likely to cause serious water stains, so that soil permeability deterioration, water evaporation blocked, also affect the growth of tobacco plants. Therefore, combined with the actual production and disadvantages of local production, the development of practical agricultural plastic film mulching production technology, Agriculture Mulch make full use of the role of agricultural plastic film, to take the appropriate technical measures is the basis for the success of agricultural plastic film mulching.
Second, the use of agricultural film mulching cultivation
The plastic film mulching cultivation can significantly improve the yield and quality of tobacco leaves in Yunnan high and high altitude tobacco areas, especially in the large-scale application of obvious low-temperature, Agriculture Mulch drought and other obstacle factors. The application of plastic film mulching in the area with high altitude and frost - free period can be used for 7 to 20 days in advance, and the maturity of tobacco leaves is adjusted to the best time in the region, and the yield and quality of tobacco leaves are improved accordingly. Agriculture Mulch In the rainy rice crop rotation area, can reduce the leaching of fertilizers, but also to the front and back crop crop dispute to ease, so that lower production costs and improve economic efficiency. In the early droughty areas, soil drought can be significantly improved, the survival rate of tobacco transplanting greatly improved, effectively reduce the risk of drought stress in the early stage of growth, and promote the early and rapid development of tobacco plants.