“Two membranes and one net†means that there is a shed film, a bottom mulch, and an insect-proof net. Facilities (mainly greenhouses and greenhouses) cover the vegetables with double membranes, reducing the evaporation of surface water, and at the same time cooperating with subsurface irrigation and furrow irrigation. Field water-saving management measures can effectively maintain inter-row, soil-drying between plants, soil is not compacted, help maintain the ground temperature and temperature in the facility, promote the normal growth of vegetables, achieve water-saving production, reduce air humidity in the facility, and reduce pests and diseases The occurrence of the disease and the suppression of weed growth, reducing the number of field applications, fundamentally solved the problem of the number and dosage of pesticides used in the production of pollution-free vegetables, and protected the agricultural ecological environment. At the same time, an insect-proof net (30 mesh) was installed at the outlet of the greenhouse to artificially construct an isolation barrier, and the insects were rejected from the net to reduce the spread of pests. The use of insect nets for vegetable cultivation can achieve better insect repellent effect, especially during the peak season of vegetable pests in summer and autumn. It can effectively cover the main vegetable pests.
The yellow board trapping technique utilizes the special spectral tropism of the pests to carry out swatch physical trapping of pests. The yellow board mainly sticks to aphids, Liriomyza sativae, whiteflies and other pests. By hanging yellow plates in fields or greenhouses, the above vegetable pests can be effectively controlled. In the greenhouse, about 2025 large plates (4025 cm) are hung per acre. One end of a plastic rope or wire is fixed on the top of the greenhouse, and the other end holds a reserved space on the yellow board. The height of the suspension is the same as the top of the crop, and the crop height is the same. The height of growth is adjusted.
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