The selection of potash fertilizer varieties should be "four looks".
Potassium sulfate should be selected for sulfur-deficient soil, and potassium sulfate should also be applied in saline-alkali soil, not potassium chloride, so as to avoid increasing the content of soil chloride. Potassium sulfate should be selected for crops that are sensitive to chlorine, such as tobacco, potatoes, sweet potatoes, sugarcane, tea trees, oranges and so on. Potassium sulfate should also be used for sulfur-loving crops, such as onions, garlic and other vegetables. Look at the price of fertilizer potassium sulfate is more expensive than potassium chloride, so in addition to special reasons and requirements, in general, potassium chloride should be selected as far as possible. Look at the irrigation conditions or rainy areas, as long as the soil drainage conditions are good, most crops can choose potassium chloride, which will not have a bad effect on yield and varieties.
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Classification and study of botanical insecticides
10% of cypermethrin EC is used 2 to 5 days before going on the market: 2.5% deltamethrin 2 days; 2.5% kungfu EC 7 days; 5% rifampicin EC 3 days; 50% aldicarb wettable powder 6 days; 1.8% epididyl EC 7 days; 10% kill the enemy.
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What kind of phosphate fertilizer is suitable for drip irrigation system
Phosphorus fertilizer used in drip irrigation systems must be water soluble. Traditionally used phosphorus fertilizers, such as calcium superphosphate, are mainly water-soluble calcium dihydrogen phosphate, but there are other insoluble impurities, so they are not suitable for drip irrigation systems. Monoammonium phosphate, diammonium phosphate, potassium dihydrogen phosphate and phosphoric acid are all completely soluble and are very good...
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