![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Foliar topdressing of vegetables is a fertilization method in which fertilizer is dissolved in water and sprayed on the foliage. The method is simple, convenient, low in cost, quick in effect, and high in benefit. Especially suitable for trace element topdressing, it has a positive effect on increasing the yield and quality of vegetables, but it must be scientific and reasonable.
First, the type of fertilizer should be appropriate. There are many kinds of fertilizers suitable for vegetable leaf top dressing. Commonly used are urea, potassium dihydrogen phosphate, superphosphate, potassium phosphate, zinc sulfate, rice vinegar, borax, rare earth and ash leaching liquid, etc., while volatile and poorly soluble fertilizers are not suitable. Such as ammonium bicarbonate, calcium magnesium phosphate fertilizer.
Second, the depth of spray fertilizer should be appropriate. The suitable concentration of foliar fertilization is: urea 1% - 2%; potassium dihydrogen phosphate 0.2% - 0.5%, ammonium sulfate 0.2% - 0.3%; borax 0.03% - 0.1%; superphosphate 1% - 2%; rice vinegar 0.3%; rare earth 0.3% - 0.1%.
Third, the amount of sprayed fertilizer should be sufficient. When spraying, the leaves of the plant are evenly covered with misty water droplets, which is not suitable for dripping. Generally, 40-60 kg of fertilizer solution is required per mu.
Fourth, the spraying site should be appropriate. The key part of the spraying of the leaf top dressing is the young stems and leaves of the vegetables, and the front and back sides should be sprayed, and should not be sprayed or re-sprayed.
Fifth, the application period should be appropriate. Leafy vegetables are generally applied in the early and middle stages of growth; solanaceous fruits, melons, beans, and roots are generally applied in the middle and late stages.
6. The number of spraying should be appropriate. Generally, the foliage is applied 2-3 times, once every 7-10 days.
Seven, pay attention to the application time. Foliar topdressing should be sprayed on sunny days when the sun is not too strong, so as to extend the warming time of the fertilizer on the vegetables and improve the fertilizer efficiency. If the rain is 3 hours after spraying, it should be replenished after the weather, but the concentration should be appropriate. reduce.
8. Fertilizers should be reasonably applicable. When the vegetable leaf top dressing is applied, two or more kinds of fertilizers are reasonably mixed, and the yield increasing effect is remarkable. However, it should not be mixed arbitrarily. For example, potassium dihydrogen phosphate cannot be mixed with rare earth. The filtered human excrement cannot be mixed with the ash leaching solution, and zinc phosphate cannot be mixed with superphosphate.
9. Fertilizer should be applied reasonably. Spraying phosphorus-containing fertilizer such as superphosphate, after soaking for 24 hours, dilute the supernatant to 1% - 2% and spray it. The potassium fertilizer is diluted with the grass ash supernatant after soaking for 2 hours and then sprayed.
10. Select suitable fertilizer according to the type of vegetables. Leafy vegetables, such as cabbage, celery, spinach and other foliar fertilization, mostly use urea, potassium dihydrogen phosphate; solanaceous fruits, melon vegetables such as tomatoes, cucumbers, etc., more than nitrogen, phosphorus, potassium mixed liquid or multi-component fertilizer; Rhizome vegetables, such as potatoes, radishes, onions, etc., use phosphorus and potassium fertilizers.
First, the type of fertilizer should be appropriate. There are many kinds of fertilizers suitable for vegetable leaf top dressing. Commonly used are urea, potassium dihydrogen phosphate, superphosphate, potassium phosphate, zinc sulfate, rice vinegar, borax, rare earth and ash leaching liquid, etc., while volatile and poorly soluble fertilizers are not suitable. Such as ammonium bicarbonate, calcium magnesium phosphate fertilizer.
Second, the depth of spray fertilizer should be appropriate. The suitable concentration of foliar fertilization is: urea 1% - 2%; potassium dihydrogen phosphate 0.2% - 0.5%, ammonium sulfate 0.2% - 0.3%; borax 0.03% - 0.1%; superphosphate 1% - 2%; rice vinegar 0.3%; rare earth 0.3% - 0.1%.
Third, the amount of sprayed fertilizer should be sufficient. When spraying, the leaves of the plant are evenly covered with misty water droplets, which is not suitable for dripping. Generally, 40-60 kg of fertilizer solution is required per mu.
Fourth, the spraying site should be appropriate. The key part of the spraying of the leaf top dressing is the young stems and leaves of the vegetables, and the front and back sides should be sprayed, and should not be sprayed or re-sprayed.
Fifth, the application period should be appropriate. Leafy vegetables are generally applied in the early and middle stages of growth; solanaceous fruits, melons, beans, and roots are generally applied in the middle and late stages.
6. The number of spraying should be appropriate. Generally, the foliage is applied 2-3 times, once every 7-10 days.
Seven, pay attention to the application time. Foliar topdressing should be sprayed on sunny days when the sun is not too strong, so as to extend the warming time of the fertilizer on the vegetables and improve the fertilizer efficiency. If the rain is 3 hours after spraying, it should be replenished after the weather, but the concentration should be appropriate. reduce.
8. Fertilizers should be reasonably applicable. When the vegetable leaf top dressing is applied, two or more kinds of fertilizers are reasonably mixed, and the yield increasing effect is remarkable. However, it should not be mixed arbitrarily. For example, potassium dihydrogen phosphate cannot be mixed with rare earth. The filtered human excrement cannot be mixed with the ash leaching solution, and zinc phosphate cannot be mixed with superphosphate.
9. Fertilizer should be applied reasonably. Spraying phosphorus-containing fertilizer such as superphosphate, after soaking for 24 hours, dilute the supernatant to 1% - 2% and spray it. The potassium fertilizer is diluted with the grass ash supernatant after soaking for 2 hours and then sprayed.
10. Select suitable fertilizer according to the type of vegetables. Leafy vegetables, such as cabbage, celery, spinach and other foliar fertilization, mostly use urea, potassium dihydrogen phosphate; solanaceous fruits, melon vegetables such as tomatoes, cucumbers, etc., more than nitrogen, phosphorus, potassium mixed liquid or multi-component fertilizer; Rhizome vegetables, such as potatoes, radishes, onions, etc., use phosphorus and potassium fertilizers.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Touch Control Faucet
Customer: How can we conserve water?
Handy: We have the Touch control faucet help you satisfy your desires. Dural brass gravity casting main body, polished chrome color, resisting corrosion and tarnishing. Male thread water saving aerator, touching control, 4 kinds of outlet water: shower water, bubbler water, self closing, Omni – directional aerator. The working pressure of the product is 0.05MPa to 0.9MPa. Water saving rate reach to 48%.
Touch Control Faucet
Water Saving Devices,Energy Efficient Faucets,Water Saver Taps,Touch Switch Faucet
SHENZHEN KING OF SUN INDUSTRY CO.,LTD , http://www.handyfaucet.com