Excessive application of nitrogen fertilizer, fruit "yin and yang face" The fruit farmers know that nitrogen fertilizer is the life element of plants. In order to pursue high efficiency and higher yield, the application of nitrogen fertilizer is over-dosed. The consequences are: the branches are long, the fruit is not mature, the frost is harmful, the leaves are early, the branches are cold-resistant, and the fruit taste is poor. Poor, uneven coloration, formation of yin and yang face, low solid content, no storage value of late-maturing varieties, high loss rate during storage. Excessive application of potassium fertilizer is not conducive to color enhancement Due to the false propaganda and misleading of fertilizer distributors and manufacturers, “multiple application of potassium fertilizer and sugar coloringâ€, many farmers over-apply potassium fertilizer, resulting in potassium poisoning in the tree: starting from the middle and lower parts of the branches, the oily yellowing of the leaves edge, expected The natural coloration of the fruit has not been achieved. In fact, in the process of grape growth, potassium fertilizer has the effect of promoting the fatness of flesh, but the effect on sugar-staining is not so magical to manufacturers and distributors. Excessive application of potassium fertilizer not only inhibits the absorption of magnesium, but also inhibits the absorption of phosphorus. In the coloring process, calcium can promote the sugar produced by the leaves to the fruit, and play a role of "sweating sugar". Magnesium and zinc are activators of various enzymes in plants, which play an important role in the color change of grape skin. Since the absorption of zinc by grapes is small, the absorption of magnesium is relatively large. Therefore, magnesium is the key to grape coloration. There are three main types of potassium fertilizer applied in grape fields: potassium sulfate, potassium nitrate, and potassium dihydrogen phosphate. So, what potash is a better potash? Potassium dihydrogen phosphate. Potassium sulphate causes soil acidification, and potassium nitrate contains nitrogen, which stimulates growth. Potassium dihydrogen phosphate contains phosphorus and potassium. The total nutrient content is about 86%. Phosphorus promotes flower bud differentiation and potassium promotes sugar synthesis. Potassium dihydrogen phosphate is a physiologically neutral fertilizer that does not cause soil acidification and does not affect calcium and magnesium. The absorption of zinc, therefore, after the grape flower to the color-changing period, the potassium dihydrogen phosphate can be used for early coloring for about one week. In the color-changing period, 5 to 8 kg of potassium dihydrogen phosphate is applied per mu. Ignore the application of phosphate fertilizer, the color is dark and the taste is poor. In the whole production process, people have neglected the role of phosphorus. Phosphorus plays a role in the plant body, which accelerates the circulation of various elements in the plant body, and the effect can not be ignored in the process of grape growth and color conversion. The photosynthesis of plants is poor after phosphorus deficiency, and the fruits are gray, dark, and have poor taste. Promote grape sugaring 1. Reasonable load, increase the ratio of leaf to fruit, leave 8~10 leaves on the ear, and the single leaf in the daytime. 2. During the color expansion period, foliar application of potassium dihydrogen phosphate, magnesium sulfate, molybdenum fertilizer, and color acid amine can effectively promote photosynthesis, and can not underestimate the coloration of sugar. 3. Control nitrogen fertilizer, eliminate hormone reddening, and benefit the body and mind. Remind the majority of farmers, in the late stage of grape growth, we must pay attention to less nitrogen fertilizer, more phosphorus and potassium fertilizer! Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone SARS-CoV-2 Antigen Test Kit (Colloidal Gold) SARS-CoV-2 Antigen,Colloidal Gold,COVID-19 Antigen Shenzhen Uni-medica Technology Co.,Ltd , https://www.nbunimed-global.com