Foliar fertilizer should not be equated with pesticides.
With the rapid development of science and technology, there are more and more varieties of foliar fertilizer in the market, most of which contain essential nutrients for crops, which can prevent a variety of physiological diseases caused by element deficiency. Some foliar fertilizers contain humic acid, growth aids and physiologically active substances, which can promote crop growth and enhance stress resistance. The correct use of foliar fertilizer has a certain effect on improving crop quality and increasing yield. However, most foliar fertilizers do not contain fungicides and pesticides, and have no direct control effect on infectious diseases caused by fungi, bacteria and viruses. However, in order to promote sales and obtain higher economic benefits, some foliar fertilizer manufacturers and dealers make efforts on words to say that their products are omnipotent, such as effective control of standing blight, rust, smut, soft rot, wilt wilt, and so on; some products are introduced that spraying in different growth periods can prevent wheat powdery mildew, sheath blight, smut, clump dwarf and so on, which is better than some pesticides currently used. Here, I would like to remind farmers that the use of foliar fertilizer should be targeted, the corresponding fungicides and pesticides should be selected for the prevention and control of crop diseases and insect pests, and foliar fertilizer should not be used as pesticides to avoid losses.
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Types of foliar fertilizer and matters needing attention in spraying
Foliar fertilizer is a type of fertilizer in which nutrient elements are applied to the surface of crop leaves and play a basic function through the absorption of leaves. Plant leaves have upper and lower layers of epidermis, which are composed of epidermis cells, and the outer side of upper epidermis cells have horny layer and wax. it can protect the mesophyll cells under the epidermis from photosynthesis.
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Why don't sweet-scented osmanthus trees blossom?
Why don't sweet-scented osmanthus trees blossom? What is it caused by? How to solve in recent years roadside residential areas, government organs, enterprises and institutions have planted a lot of large sweet-scented osmanthus trees, blooming season, it is supposed to be fragrant all over the city, but it is difficult to smell sweet-scented osmanthus. Why can't you smell the fragrance only when you see the flowers? Some people say that tall buildings are blocked in the city.
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