Must pay attention to foliar fertilizer

Foliar fertilizer generally refers to organic and inorganic fertilizers of various forms and nutrients. After processing, it is made into an aqueous solution and sprayed on the foliage of plants according to certain technical requirements and concentrations and dosages to provide nutrients and other functions for plants. It is called foliar fertilizer. It is also a means of topdressing. The role of foliar fertilizer is mainly to make up for the lack of nutrients in the roots of crops, promote the physiological metabolism and growth of crops, and also improve the yield and quality of crops, especially the age of cold damage. Field crops increase annual production by 5% to 10%; fruit trees increase production by 5% to 15%; vegetables increase production by 20% to 30%.

In recent years, with the development of production, the popularization of agricultural mechanization and improved seed production, the continuous increase of crop yields, especially with the growth of planting years, the trace elements in the soil have been decreasing year by year, resulting in imbalance of nutrients. In order to achieve sustainable development of agriculture and solve this prominent problem, the use of foliar fertilizer to supplement the nutrient deficiency in the soil has become an important direction of agricultural development. Therefore, the use of foliar fertilizer should be highly valued by farmers.

New features of foliar fertilizer:

First, it is highly targeted. Especially for the plots that are fertilized by formula, if the crop lacks any elements, what kind of elements will be supplemented, and if there is a large amount of micro-fertilizer, it will make up a lot of micro-fertilizer.

Second, the fertilizer is good and the absorption is fast. 1% to 2% of urea, up to one-third of the day and night; 2% of superphosphate, after 5 minutes of spraying, the crop began to absorb and play a role.

The third is to supplement the lack of nutrients. In particular, the roots have poor absorption at the seedling stage, and early spraying of zinc, magnesium, calcium, iron, phosphorus, potassium and other fertilizers at the seedling stage has a remarkable effect. In the low temperature and low temperature years, foliar fertilizer is an excellent measure to promote precocity and improve quality.

The fourth is to save fertility. The use of foliar fertilizer solves the problem of fixed, volatile and lost fertilizer in the soil, resulting in waste of fertility. 80% to 90% of foliar fertilizer can be absorbed by crops.

The fifth is to reduce costs. Spraying farmer's report leaf foliar fertilizer twice, equal to crops chasing fat. This not only solves the problem of de-fertilization in the late stage of corn, but also achieves the problems of fertilizer saving, cost reduction and de-sufficiency.

Six is ​​the new feature of new foliar fertilizer. A new type of foliar fertilizer in a broad sense, to achieve both fertilizer (pesticide); fertilizer control (growth regulator); fertilizer (hormone, rooting powder, biological fungus, sugar); Resistant to pests and diseases, anti-adult, anti-frost, anti-drug ...). It is the development direction of agricultural green food and agricultural industrialization in the future.

In the production and use of new foliar fertilizers, it is necessary to grasp the period of use, methods of use and precautions, and do not arbitrarily change the amount of use and increase the amount of use. Under normal circumstances, try to use it alone, reduce the amount of blending, and carry out small-area test 3 to 5 days before use. After no problem, it will be widely promoted. When spraying the fertilizer, it is best to carry it on a cloudy day without wind.

Source: Fujian Lianjiang County Agriculture Bureau
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