It is more economical and effective to fertilize greenhouse vegetables by diluting the trace fertilizer and spraying the leaves of the vegetables. But during the spraying process, you must pay attention to the following four skills:
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 amount of general mu fertilizer solution 40 to 70 kg, can make the stems and leaves of vegetables wet.
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, it should generally be based on the length of the vegetable growth period, spraying 2 to 4 times is appropriate.
The time is to reduce the loss of trace fertilizer during the spraying process, which is beneficial to the absorption of the leaves. Spraying should be performed in the cloudy or sunny afternoons from the afternoon to the evening. This can extend the residence time of the fertilizer solution on the leaves of the vegetables, which will help improve the spraying. effect.
2 Wire Intercom System,2 Wire Intercom,2 Wire Video Intercom,2 Wire Door Entry System
Zhuhai Mingke Electronics Technology Co., Ltd , https://www.mingke-tech.com