If concentration is too high, it will not only be useless but harmful. In general, the suitable 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% ~ 1%. The period of spraying the trace fertilizer must be determined according to different vegetable varieties and different types of micro-fertilizers, and it is generally appropriate to spray before flowering. Dosage is about 40-75 kilograms of general mu fertilizer solution, which can make the stems and leaves of vegetables wet. Frequently, the amount of fertilizer used for leaf spraying is less, and it is difficult to meet the needs of all growth and development processes at a time. Therefore, it is generally advisable to spray 2 to 4 times depending on the length of the growing period of the vegetables. Time to reduce the loss of trace fertilizer in the spraying process, which is conducive to the absorption of leaves, should be selected cloudy or sunny afternoon afternoon spray, this can extend the retention time of fertilizer solution on the leaves of vegetables, improve the spraying effect. Mixed spraying with two or more than two kinds of trace fertilizers mixed spraying, or mixed spraying with pesticides, can save the process, play a role in a multi-effect spray, but to clarify the fat and drug properties, such as the opposite nature, mutual Obstruction, must not be mixed spraying. All kinds of trace fertilizers should not be mixed with alkaline fertilizers such as grass ash and lime; zinc fertilizers should not be mixed with superphosphate; copper fertilizers should not be mixed with potassium dihydrogen phosphate solution. When spraying with pesticides, consider the dual effects of fertilizer efficiency and drug efficacy. In general, all kinds of micro fertilizers should not be mixed with alkaline pesticides. When preparing a mixed spraying solution, generally, a kind of micro-fertilizer is first formulated into an aqueous solution, and then other medicines and fertilizers are directly added into the prepared micro-fertilizer solution to dissolve. Diesel Engine Spare Parts,Engine Cylinder Liner,Engine Piston,Marine Engine Spare Parts,Diesel Generator Spare Parts ZhouShan HeCheng Machinery Co., LTD. , https://www.hcmarineparts.com
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Multi-spraying vegetable fertilizers reduces costs
The author is a grassroots agricultural technician. The practice of vegetable cultivation for many years has proved that it is an economic and effective measure to dilute the micro-fertilizer to spray the leaves of vegetables, but in the spraying process, the following “six levels†should be considered.
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