Maize large spot disease selected the main cultivated varieties and the growing corn field. Five sampling points were taken to check the number of diseased plants, the number of leaves per plant and the severity of each plant. When the general disease rate reaches 100% and the diseased leaf rate is 30%, there is a rainfall process and prevention can be carried out. Control methods: Can be sprayed with 12% green copper, or 25% of the enemy off 2000 times, or 40% of Wei Wei suspension emulsion 1000 times or 80% of new Wansheng 700 times.
Corn Variety Variety Selection of disease-resistant varieties, take five sampling, check 10 per point, check the disease rate and the number of sick leaves. In general, it is used to control the spraying during the peak of silking. Control methods: spray with 25% triadimefon 500 to 800 times.
Corn smut disease should be promptly cut off.
Maize virus diseases include corn contraction and dwarf mosaic disease (flower mosaic streak disease). The virus is transmitted by the planthoppers and aphids. The number of field grasshoppers and aphids is closely related to the number of weeds in the field. However, the degree of poisoning of SBPH and aphids is related to the severity of wheat bush dwarf disease. Therefore, the occurrence degree of corn virus disease can be judged based on the occurrence degree of wheat bush dwarf disease. The main prevention and control is to eliminate weeds and pests to prevent serious corn virus disease. Control methods: In the field investigation, suspicious diseased plants were found and should be immediately removed and sprayed with anti-virus agent, such as 25% virus A500 times, or 5% bacteria poison + Tianfengsu + zinc fertilizer, or 25% virus king etc. .
The corn borer pays attention to the hatching progress of eggs and larvae damage in the field, and seizes the critical period to prevent and control the first generation of corn mash. Control methods: Bt cream can be used to make granules or use 1605, phoxim EC granules, or B. bassiana granules, or 3% for Lehr granules, or 98% Bataan soluble powder granules to make Into the corn big bell, kill the newly hatched larvae.
Corn Moth is a major moth that harms corn fields. The number of eggs and larvae on 100 strains was investigated in late July. When 500 eggs were found to have 2 eggs, or when the ear of the bite was more than 15%, they were immediately treated. Control methods: The newly hatched larvae of C. rapae have a habit of concentrating harm. After the corn silking, there are more larvae, which can be organized to catch insects artificially or sprayed to prevent and cure.
Steel Grating
The steel grating be welded to products . Normally, hot galvanizing will be carried out after end welding process. The range PH6 to PH12.5, a stable protective film will be formed on the zinc surface, the hot dipped galvanized steel grating has good anti-corrosive property. Of course, the steel grating also have other surface treatment, for example painted and powder coated .
Steel grating can be cutting to different kinds of shape as per your special needs.
Steel grating including flat grating, 'I' shape grating, serrated grating.
In generally , the steel grating be used as stair tread, platform, fence, trench cover, ceiling, etc.
The advantage of steel grating :
firm welding
smooth surface
high strength
Steel Grating,Stainless Steel Grating,Galvanized Steel Grating,Hot Dipped Galvanized Steel Grating
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