Vegetable leaf fertilizer spraying technology

In addition to fertilizers applied to the roots during the growth of vegetables, foliar sprays are also important. There are differences in the types and methods of spraying foliar fertilizers for different vegetable types.

one. Vegetable vegetables

1. Cabbage, spinach, leeks, etc. require more nitrogen, spray fertilizer should be based on urea, ammonium sulfate.

2. Spraying concentration of urea should be 1% to 2%, ammonium sulfate is 1.5%, sprayed 2 to 4 times per quarter, and spraying in the early stage of growth is appropriate.

two. Fruit and vegetables

1. Peppers, eggplants, tomatoes, beans, and various melons are more balanced in their requirements of NPK, and NPK mixtures or compound fertilizers should be used.

2. Spray 1% to 2% of urea and 0.3% to 0.4% of potassium dihydrogen phosphate mixed solution or 2% of compound fertilizer solution. It is usually sprayed one or two times in the early and late stages of growth. Spraying at later stages can prevent premature aging and enhance stamina, which has a good effect on yield increase.

three. Root vegetables

1. Garlic, onion, radish, potatoes, etc. require more phosphorus and potassium, spray fertilizer should use phosphorus and potassium mixed solution or compound fertilizer.

2. Foliar fertilizer can use 0.3% potassium dihydrogen phosphate solution, 10% of the ash leaching liquid. Spraying 3 to 4 times per season, the effect is better.

four. Precautions

Foliar spraying should be best when the sun is cloudy or sunny in the afternoon when the sun is not very strong. According to the growing condition of the vegetables, the spraying liquid per mu is 30-50 kilograms each time, so as to limit the foliage of the vegetables to be moist. According to the needs of different vegetables for trace elements, the appropriate amount of micro-applied fertilizer can increase the yield and improve the quality of the effect, labor-saving multi-effect, but avoid acid and alkali neutralization.