Micronutrient fertilizer is an indispensable nutrient element in the growth and development of vegetables. After diluting micronutrient fertilizer, foliar fertilizer is sprayed on the foliar fertilizer to reduce the cost, efficiency and efficiency. The technical points are:
1, spray concentration. Concentration is appropriate to receive good results, especially the concentration can not be too high, otherwise it is not only useless, but harmful. Appropriate concentrations of various micronutrients for spraying on vegetables are: borax or boric acid 0.05%-0.25%, ammonium molybdate 0.02%-0.05%, zinc sulfate 0.05%-0.2%, manganese sulfate 0.05%-0.1%, sulfuric acid Iron 0.5%-1%, rare earth nitrate 0.03%-0.1%, 0.1%-0.15% rare earth moving plant treasure.
2, spray time. According to different vegetable varieties and different trace element fertilizer applications to determine the spraying period, it is generally appropriate to spray from the seedling stage to flowering. The best choice is to spray on a cloudy day. On sunny days, it is better to spray in the afternoon when the sun is not strong enough to extend the residence time of the fertilizer solution on the stems and leaves of the vegetables as much as possible, which will help the absorption of the leaves and improve the spraying effect.
3, spray times. Micro fertilizer is used for foliar fertilizer spraying, with less fertilizer, and it is difficult to meet the needs of the entire growth and development stage with one spray, thus resulting in poor results. According to the length of the vegetable growth period to determine the number of spraying, usually 2-4 times. It should also be adapted to local conditions and varied from vegetable to vegetable and should be combined with seed treatment (soaking, seed dressing) or basal application.
4, spray application. According to the amount of vegetable growth to determine the spraying amount of micro-fertilizer solution, the early seedling leaflets should be less less spray, post-proliferation leaf Mao Mao to spray more, to plant stems and leaves moistened to the limit. Spray finely and spray the front and back of the blade. Usually 40-50 kg per acre spray fertilizer.
5, reasonable mixed spray. A reasonable mix of trace fertilizers or mixed spraying with other fertilizers and pesticides can save labor and labor, and can also play a role of “multiple effectsâ€. However, attention should be paid to the physicochemical properties of fertilizers and pesticides when mixing, and fertilizer and efficacy should not be affected when mixed with pesticides. In general, all kinds of trace fertilizers cannot be mixed with alkaline fertilizers and alkaline pesticides, and zinc fertilizers should not be mixed with phosphate fertilizers.
1, spray concentration. Concentration is appropriate to receive good results, especially the concentration can not be too high, otherwise it is not only useless, but harmful. Appropriate concentrations of various micronutrients for spraying on vegetables are: borax or boric acid 0.05%-0.25%, ammonium molybdate 0.02%-0.05%, zinc sulfate 0.05%-0.2%, manganese sulfate 0.05%-0.1%, sulfuric acid Iron 0.5%-1%, rare earth nitrate 0.03%-0.1%, 0.1%-0.15% rare earth moving plant treasure.
2, spray time. According to different vegetable varieties and different trace element fertilizer applications to determine the spraying period, it is generally appropriate to spray from the seedling stage to flowering. The best choice is to spray on a cloudy day. On sunny days, it is better to spray in the afternoon when the sun is not strong enough to extend the residence time of the fertilizer solution on the stems and leaves of the vegetables as much as possible, which will help the absorption of the leaves and improve the spraying effect.
3, spray times. Micro fertilizer is used for foliar fertilizer spraying, with less fertilizer, and it is difficult to meet the needs of the entire growth and development stage with one spray, thus resulting in poor results. According to the length of the vegetable growth period to determine the number of spraying, usually 2-4 times. It should also be adapted to local conditions and varied from vegetable to vegetable and should be combined with seed treatment (soaking, seed dressing) or basal application.
4, spray application. According to the amount of vegetable growth to determine the spraying amount of micro-fertilizer solution, the early seedling leaflets should be less less spray, post-proliferation leaf Mao Mao to spray more, to plant stems and leaves moistened to the limit. Spray finely and spray the front and back of the blade. Usually 40-50 kg per acre spray fertilizer.
5, reasonable mixed spray. A reasonable mix of trace fertilizers or mixed spraying with other fertilizers and pesticides can save labor and labor, and can also play a role of “multiple effectsâ€. However, attention should be paid to the physicochemical properties of fertilizers and pesticides when mixing, and fertilizer and efficacy should not be affected when mixed with pesticides. In general, all kinds of trace fertilizers cannot be mixed with alkaline fertilizers and alkaline pesticides, and zinc fertilizers should not be mixed with phosphate fertilizers.
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