Dynasul Liquid Dyes are environmental-friendly liquid sulfuration dyes . Dynasul dyes are Sulphur Dyes for cotton with good wash fastness.
Sulphur dyes are inexpensive dyes used to dye cotton with dark colors. Dyeing is effected by heating the fabric in a solution of an organic compound, typically a nitrophenol derivative, and sulphide or polysulfide. The organic compound reacts with the sulphide source to form dark colors that adhere to the fabric. Sulphur Black 1, is our largest selling sulphur dye by volume.
Sulphur Dyes Sulphur Dyes, Sulphur Green Dyes, Sulphur Black Dyes Dynasty Chemicals (NingBo) Co., Ltd. , http://www.dychemco.com
Tomato soil testing and formula fertilization technology
Tomato production of 1000 kg of tomatoes requires pure nitrogen 3.85 kg, phosphate fertilizer (diphosphorus pentoxide) 1.2 kg, potassium fertilizer (potassium chloride) 4.4 kg, calculated according to the yield of 5000 kg per mu, the application of high-quality farmyard manure 5000 kg, phosphate fertilizer 50 kg before planting . When the first ear is swollen to the size of egg yolk, the first top dressing should be carried out. The ear is applied with 18-20 kg of pure nitrogen, 15-16 kg of phosphate fertilizer, and 16-17 kg of potassium fertilizer. The second, third and fourth ear fruits are swollen to the eggs. When the size of yellow is large, it should be topdressed in time. In this case, the amount of fertilizer needs to be large, and the amount of topdressing should be increased appropriately. Each top dressing should be combined with watering. It is also possible to use a 0.35% chemical fertilizer (such as potassium dihydrogen phosphate) in combination with a disease-preventing drug for foliar application, or a mixture of sitting fruit and fruit.
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