Vegetable foliar topdressing has the advantages of fertilizer saving, quick effect, and increased yield. However, if the application method is not correct, it will not receive good results. The correct application method is as follows:
I. Spraying the foliar fertilizer on the road 1. Leafy vegetables such as cabbage, spinach, celery, etc. need more nitrogen, spray fertilizer should be mainly urea, ammonium sulfate, spray concentration of urea 1% -2%, Ammonium sulfate 1.5%, spray 2-4 times per season, suitable for spraying in the growing season.
2. Fruits and vegetables such as pepper, eggplant, tomato, beans and various melons have a balanced demand for nitrogen, phosphorus and potassium, and a mixed solution of NPK or compound fertilizer should be used. It can be sprayed with 1%-2% urea and 0.3%-0.4% potassium dihydrogen phosphate mixed solution or 2% compound fertilizer solution, usually sprayed 1-2 times in the pre-growth stage and the late stage. Post-spraying can prevent premature aging, enhance stamina, and have a good yield increase effect.
3. Root vegetables such as garlic, onions, radishes, potatoes, etc. require more phosphorus and potassium, spray 0.3% potassium dihydrogen phosphate solution, 10% grass ash leaching solution, spray 3-4 times per season.
Second, the spraying time should be suitable for spraying foliar fertilizer on the cloudy or sunny morning or after 4 o'clock in the afternoon, when the sun is not too strong, the effect is best. Under normal circumstances, it is better to keep the blade moist for 30-60 minutes. If it rains within 3 hours after spraying, it should be sprayed once every day, but the concentration should be reduced appropriately.
Third, the spraying method Foliar spray fertilizer is mostly sprayed with a sprayer, generally sprayed on the back of the blade is better, because the back spray less fertilizer and more fertilizer.
Fourth, to have enough spray volume is generally good when the fertilizer liquid will flow down the blade without flowing down.
I. Spraying the foliar fertilizer on the road 1. Leafy vegetables such as cabbage, spinach, celery, etc. need more nitrogen, spray fertilizer should be mainly urea, ammonium sulfate, spray concentration of urea 1% -2%, Ammonium sulfate 1.5%, spray 2-4 times per season, suitable for spraying in the growing season.
2. Fruits and vegetables such as pepper, eggplant, tomato, beans and various melons have a balanced demand for nitrogen, phosphorus and potassium, and a mixed solution of NPK or compound fertilizer should be used. It can be sprayed with 1%-2% urea and 0.3%-0.4% potassium dihydrogen phosphate mixed solution or 2% compound fertilizer solution, usually sprayed 1-2 times in the pre-growth stage and the late stage. Post-spraying can prevent premature aging, enhance stamina, and have a good yield increase effect.
3. Root vegetables such as garlic, onions, radishes, potatoes, etc. require more phosphorus and potassium, spray 0.3% potassium dihydrogen phosphate solution, 10% grass ash leaching solution, spray 3-4 times per season.
Second, the spraying time should be suitable for spraying foliar fertilizer on the cloudy or sunny morning or after 4 o'clock in the afternoon, when the sun is not too strong, the effect is best. Under normal circumstances, it is better to keep the blade moist for 30-60 minutes. If it rains within 3 hours after spraying, it should be sprayed once every day, but the concentration should be reduced appropriately.
Third, the spraying method Foliar spray fertilizer is mostly sprayed with a sprayer, generally sprayed on the back of the blade is better, because the back spray less fertilizer and more fertilizer.
Fourth, to have enough spray volume is generally good when the fertilizer liquid will flow down the blade without flowing down.
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