The initial leaves of the vegetable nitrogen-deficient fertilizer showed pale green or yellow (slightly lacking), and soon the stems repeated the same change. Leaf color changes usually start with old leaves and then gradually extend to the entire leaf cluster. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
The vegetable phosphate deficiency fertilizer initially showed slow growth, and then the leaves showed chlorotic lesions, slender stems, woody, small leaves, deep leaf color, reddish purple on the back, delayed fruiting and fruit ripening. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
The vegetable-deficient potassium fertilizer had gray-green leaves at the base of the plant, followed by leaves that were bronzed and yellow-brown, and the leaf edges turned brown, with spots along the veins, tissue decay and death. Stems are slender, hard, and woody. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Vegetable calcium deficiency is characterized by slow growth and the formation of large, woody stems. The top and young parts of the plant showed obvious symptoms. When tomatoes are deficient in calcium, they are prone to umbilical rot, which is characterized by the appearance of round brown rot on the top of the fruit (umbilical part). In severe cases, the whole fruit rots, sometimes accompanied by black mold. Calcium deficiency in cucumber is characterized by shrinkage of the upper leaves and no stretching. The faucet grows slowly, dry and easily confused with the scab of cucumber. The main difference is that the black spot is easily broken. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
If the vegetable lacks micro-fertilizer, if there is chlorosis and erectification between the veins, the top is affected first and the growth is slow, indicating zinc deficiency. If the apical growth point dies, the root system is poorly developed, and the flowering vegetables are only flowering or not flowering, indicating that boron is absent. If the new leaves have begun to lose green, they gradually fade to white, indicating a lack of iron. Linyi Fertilizer Network Copyright
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Stainless Steel Washer
stainless steel commercial flat washers are used under bolt heads or nuts to increase the bearing surface area, or to offer protection so that the nut or bolt can be rotated without distortion of the bearing surface. Flat washers are also used to give tightness to a joint, to prevent leakage, and especially to distribute pressure under the head of a bolt or nut. Dimensional specifications are governed by ASME B18.21.1. Commercial flat washers generally have a larger outer diameter than SAE (Society of Automotive Engineers) flat washers, and can be utilized in nearly any application. stainless steel fasteners are commonly used in applications that require general atmospheric corrosion resist ance, such as chemical and food processing equipment. Stainless steel has a higher corrosion resistance than carbon steel.
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