How to apply potassium sulfate

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/2017-05-04
/By Huifeng Runda

How to apply potassium sulfate

Potassium sulfate is suitable for a variety of crops, especially for tobacco, sugar cane, potatoes, sweet potatoes, grapes, tea and other hi bogey chlorine crops and hi sulfur cruciferous crops (such as rape, beans, etc.). Potassium sulfate is suitable for a variety of soils, in the neutral and calcareous soil application of potassium sulfate, can make the acidification rate of soil than potassium chloride slow. Can be used for basal, fertilizer, top dressing and top dressing.
Application: Potassium sulfate is generally used for dry land, not for paddy fields. For the topdressing, due to the mobility of potassium in the soil is very small, should be applied to the facilities or facilities of the centralized fertilization method, the fertilizer applied to the crop roots of dense wet soil layer In the amount of 10-20 kg / mu. In the sand soil should be the first base fertilizer, after the top dressing, the amount of 15-25 kg / mu. On the root, tuber crops can be appropriate to increase the amount, and reasonable deep application; for root outside the topdressing, spraying concentration of 2.0-3.0% is appropriate; for fertilizer, the amount of 1.5-2.5 kg / mu.
Note: Potassium sulfate and nitrogen and phosphorus fertilizer must be used in order to give full play to its fertilizer efficiency. Do not apply potassium sulfate to the roots of the crop, nor on the stalk and leaves. Rice field or reducible soil should not use potassium sulfate, because the organic matter content and poor ventilation of the paddy field, under the action of sulfur bacteria, the reduction and produce toxic substances such as hydrogen sulfide, affecting the vitality of crop roots, Produce black roots. Long-term application of potassium sulfate in acidic soil, must be combined with lime or calcium and magnesium phosphate mixed application. Potassium sulfate is easy to dissolve in water, for sandy soil is easy to lose, preferably a small amount of fractional application or mixed with farm manure. In storage, should prevent rain and damage.