F Technology of Vegetable cultivation cover shade net

First, choose the appropriate Shade Net according to the type of vegetables. Usually, the black shading nets are used for short-term coverage of summer and autumn green leafy vegetables, and silver-gray shading nets are used for summer seedlings for autumn and winter vegetables, and they can be avoided. Solanaceous plants are reserved or postponed, preferably with omentum.

Second, need to choose the appropriate period of coverage. Generally from July to August, the light intensity at other times is suitable for the growth of vegetables. If there is no heavy rain, there is no need to cover.

Third, pay attention to shading time. Shadow nets can not be covered on scaffolds for a long time, especially black shade netting. It is only at midday on sunny days in summer and autumn that the net will reach near-saturation light intensity. It is better to cover at 10 to 11 o'clock in the morning and 4 to 5 o'clock in the afternoon. Uncovered. In the 3 to 4 days before the exposing of the net, the net time should be gradually shortened so that the seedlings and plants gradually adapt to the exposed environment.