Greenhouse vegetable spray fertilizer five strokes
In the autumn and winter, after the greenhouse fertilizers are sprayed with micro-fertilizers, they are sprayed on the leaves of the vegetables. However, the following five techniques must be mastered during the spraying process: Concentration and concentration can receive good results. If the application concentration is too high, it is not only useless, but harmful. In general, the appropriate spraying concentration of various fertilizers is: boric acid or borax solution 0.05% ~ 0.25%; ammonium molybdate solution 0.02% ~ 0.05%; zinc sulfate solution 0.05% ~ 0.2%; copper sulfate solution 0.01% ~ 0.02%; iron sulfate solution 0.2% to 1%. The period of spraying the fertilizer must be determined according to different vegetable varieties and different varieties of fertilizers, and it is generally appropriate to spray when flowering. The amount of general fertilizer per acre of 40 to 70 kg, so that the stems and leaves wet vegetables is appropriate. Frequent application of leaf fertilizer is less, so it is difficult to meet the needs of the entire growth and development process at a time. Therefore, according to the length of the growing period of the vegetables, it is usually appropriate to spray 2 to 4 times. Time to reduce the loss of trace fertilizer in the spraying process and at the same time facilitate the absorption of leaves, should be selected cloudy or sunny afternoon afternoon spray, this can extend the residence time of fertilizer solution on the leaves of vegetables, help to improve the spray Effect. Video Door Phone,Intercom System For Multi Apartment,Ip Video Intercom System,Video Door Phone Made In China,Video Intercom Zhuhai Mingke Electronics Technology Co., Ltd , https://www.mingke-tech.com