Calcium fertilizer spraying is different from other foliar fertilizers. When spraying with common foliar fertilizer, it is only necessary to spray the leaves evenly, and the plants will transfer after nutrient absorption. But for calcium fertilizer, after the leaves are absorbed, they will not come out of the leaves and transport them to the really lacking parts. According to the way of spraying pesticides, vegetable farmers focus on spraying mature leaves, and of course they do not play the role of calcium supplementation. The young part is prone to calcium deficiency, and the vegetable farmers should focus on spraying the young parts of the plant when carrying out leaf calcium supplementation. For example, when the leaf surface is supplemented with calcium, the focus is on the distance of 30 cm below the growth point of the shoot tip, and the young fruit is sprayed with emphasis, and the suitable calcium application period is after the young fruit is formed.
When selecting calcium for leaf surface, choose a good calcium fertilizer product, and try to choose products with small molecules and easy to absorb.
Reasonable watering to maintain proper soil moisture
The absorption of calcium fertilizer is closely related to water. To maintain proper soil moisture, calcium absorption can be promoted. Watering should be balanced watering, not suddenly flooding a water, and drought for several days, should be poured in small water, keep the ground dry and wet, to ensure that the roots normally absorb mineral elements.
The symptoms of calcium deficiency should pay attention to the maintenance of the root system, ensure that the root system is strong and function well, and the calcium fertilizer can be absorbed. When applying calcium fertilizer, avoid using it with phosphate fertilizer, otherwise it will react to produce sediment, and reduce the use of potassium fertilizer.
Pay attention to calcium in the base fertilizer
The demand for calcium fertilizer is large, and it is difficult to meet the growth needs of vegetables by foliar fertilizer alone. Foliar spray can only be used as an emergency measure or an auxiliary measure. The variety of calcium fertilizers is also very convenient to use. Vegetable farmers should pay attention to supplement calcium fertilizer in advance.
First, slaked lime, lime nitrogen, etc., can be applied to the soil together with organic fertilizer, combined with high temperature shack, can adjust the soil pH, kill pathogens, nematodes, and calcium fertilizer, and get more.
Second, the application of a variety of calcium-containing fertilizers, such as calcium nitrate, calcium magnesium phosphate fertilizer, superphosphate. At present, the calcium fertilizer on the market is mainly calcium nitrate, which can be applied at the bottom or in a convenient manner.
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