Potassium fertilizer can make grape fruit sweet and big

Spraying potassium fertilizer outside the roots is the main way to apply potassium fertilizer in grape growing season, because it has many advantages such as fast absorption, good fertilizer efficiency and timely supply. Spraying potassium outside roots in combination with pest control saves labour. Grape is a kind of potassium-loving fruit tree. Under the condition of potassium deficiency, the yield and sugar content of potassium fertilizer are higher than those of no potassium fertilizer, and the coloring is good. The weight of single fruit is obviously increased, and the main diseases of grape (anthracnose, black pox, etc.) are obviously inhibited. The practice of selecting potassium fertilizer proved that potassium dihydrogen phosphate, potassium sulfate and high quality plant ash leaching solution were suitable for spraying potassium fertilizer outside grape roots. The application period was determined. Potassium was sprayed outside grape roots mainly at berry swelling and berry coloring ripening stage. Plants grow vigorously, but also in the flower drop after the young fruit began to grow when spraying. In the spraying of potassium fertilizer at the same time, nitrogen and phosphorus fertilizer should be applied in combination to ensure that potassium fertilizer normally exerts its fertilizer efficiency. K fertilizer should be sprayed before 9:00 a.m. and after 5:00 p.m. on cloudy days or sunny days, and it should not be sprayed at high temperature at noon. Pay attention to spraying skills Spraying potassium fertilizer outside the grape roots, spraying evenly on both sides of the leaves. Other potassium application methods after fruit picking, combined with autumn basal fertilizer application appropriate potassium.