Potassium sulfate is a white or gray-yellow crystal, and the K2O content is generally about 50%. Soluble in water, solubility increases with increasing temperature. Low moisture absorption, not easy to agglomerate, the most suitable for the preparation of mixed fertilizers.
Potassium sulfate is suitable for use in a variety of crops, particularly chlorine-sensitive crops. Its specific use methods include:
(1) can be used as base fertilizer. When using potassium sulfate as a basal fertilizer in dry fields, it is necessary to deeply cover the soil to reduce the crystal fixation of potassium and use the root absorption of the crop to increase the utilization rate.
(2) used as top dressing. Because potassium is less mobile in the soil, it should be concentrated or applied to the more dense soil layer to promote absorption. Sandy soils often lack potassium, and it is advisable to use topdressing to prevent leaching.
(3) Can be used as seed fertilizer and top dressing. For the amount of fertilizer acres 1.5 ~ 2.5kg, can also be formulated as 2% to 3% of the solution for extra-root fertilizer.
The following three issues should be noted when using potassium sulfate:
(1) Potassium sulfate is not as good as potassium chloride in soils with high reducibility such as paddy fields. The main disadvantage is that it is prone to hydrogen sulfide poisoning. Acidic soil should be used in conjunction with lime.
(2) Potassium sulphate is relatively expensive, and in general, potassium sulphate should not be used except for chlorine-sensitive crops.
(3) For cruciferous crops such as cruciferous crops, garlic, and other crops that require more sulfur, the effect is better. It should be given priority to the deployment.
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4-Hydroxy-Benzoy1,Arrhythmia Intermediates,Cas 52490-15-0
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