Cotton fertilization technology
Reasonable fertilization can promote the establishment of high-energy groups, achieve the metabolic function of cotton plants, the peak of fertilizer release, and the three periods of local photothermal resources. High-yield cotton fields must be exchanged for high output with high input. Fertilizer management must focus on the principle of “early, stable, sufficient, and longâ€. On the basis of cultivating strong seedlings, “appropriate application of home-based fertilizer, application of fertilizer, re-application of flower-bell fertilizer , Pu Shi cover top fertilizer, increase the application of long peach fertilizer. Really "early early early buds, long-term long-term long-term frame, the late strength of the foot to increase the peach and increase the weight."
The data show that cotton is a nitrate-nitrogen crop, and its yield is affected by soil nitrate nitrogen content, and the quality is affected by the ratio of nitrogen and phosphorus. Cotton needs phosphorus all its life, of which 10 to 25 days of emergence and flowering and bolling are the nutrient critical period of phosphorus, and considerable phosphorus is needed 60 days after flowering.
The ratio of nitrate nitrogen and 2:1 nitrogen and phosphorus in Tianji brand phosphate phosphate fertilizer is consistent with the nitrogen and phosphorus nutrient conditions required for high yield and quality of cotton. The rare earth nitrate in fertilizer has a promoting and coordinating effect in the growth process of cotton. The nitrogen and phosphorus nutrients in the rush and the slowness are in line with the growth law of cotton. Both the base fertilizer and the top dressing are incomparable with traditional fertilizers.
According to the target yield and fertilizer characteristics, on the basis of the application of organic fertilizer, 30 kg of Tianji brand NPK is used as the base fertilizer, and 15 kg of nitrophosphate fertilizer is applied in the flower bud period. kg. The amount of low- and medium-yield fields is reduced.
(Zhang Qiaolan)
From: Henan Daily Rural Edition
Steel flanges:
Types: Blind Flanges, Weld neck flanges, Socket flanges, Slip On Flanges, WN Flanges, Threaded flanges.
Material: Carbon Steel Flange: 20#, Q235, A105, ST20, C22.8, Rst37.2,
Material: Size: 15A- 2000A, 1/2"-78"
Surface Treatment of Steel flanges: Anti-rust Oil, Transparent/ Yellow/Black Anti-rust Paint, Zinc, Hot dipped Galvanized.
Class: Class150,Class300,Class400,Class600,Class900,Class1500,Class2500
A Steel flange is an external or internal ridge, for strength, as the flange of an iron beam such as an I-beam or aT-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera; or for a flange of a rail car or tram wheel. Thus flanged wheels are wheels with a flange on one side to keep the wheels from running off the rails. The term "flange" is also used for a kind of tool used to form flanges. Pipes with Steel flanges can be assembled and disassembled easily.
A Blind flange is round plate which has all of the relevant both holes but no center hole, and because of this feature this flange is used to close off the ends of a piping systems and pressure vessel openings. It also permits easy access to the interior of a line or vessel once it has been sealed and must be reopened.
We have adopted advanced production equipment and technologies to manufacture our blind flanges weld neck socket flanges slip on flanges and threaded flanges, which can not only improve product quality, but also save raw materials. Our products have high strength, good toughness and resistance to corrosion.
Slip On Flanges,WN Flanges,Welding Neck Flange,Blind Flanges
Cangzhou Fixed Star Steel Co.,Ltd , http://www.fixedstarpipe.com