Use of potassium sulfate fertilizer should pay attention to the main points

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/2017-06-30
/By Huifeng Runda

Use of potassium sulfate fertilizer should pay attention to the main points

In the following cases are more likely to lack:
① far away from the town, by the chimney and dust pollution in less areas;
② long-term use of diammonium phosphate instead of superphosphate and phosphate rock powder to urea, ammonium bicarbonate instead of ammonium sulfate, that is not the application of sulfur fertilizer in the region, especially in the northwest and northeast and other remote areas;
③ long-term use of organic fertilizer, inadequate application or soil fertility degradation more serious areas, including field crops may be more than vegetables, fruit trees more easily sulfur;
④ sand and saline soil area of the larger areas, soil sulfur deficiency, potassium deficiency or chlorine, more than other regions need to use potassium sulfate;
⑤ Soybean, rape and other sulfur crops may be more likely to lack sulfur than other crops or need potassium sulfate fertilizer.
Potassium sulfate is a physiological acid fertilizer.
As the crop uptake of potassium ions than the absorption of sulfate ions is relatively large or faster, will lead to rhizosphere soil acidification, thereby enhancing the soil phosphorus and trace elements in the effectiveness of nutrients. This physiological acidification is particularly important for northern rice nursery. In order to cultivate strong seedling and reduce pests and diseases, it is required to control the pH value of soil or nutrient soil of rice seedling in the range of 4.5 ~ 5.5. In this way, potassium fertilizer should be used in addition to sulfuric acid and acid fertilizer, 50 grams per square meter, or 5 grams for each nursery tray. This is helpful for acidifying the rhizosphere soil.
To improve the applicability of potassium sulfate fertilizer application.
Potassium sulfate has a broad spectrum of various soils and crops, but its price is high, so it is better to make steel on the blade. When there are several different soils and crops at the same time, priority should be given to the most needed crops or soils, such as fruit trees, vegetables and other cash crops than the general field crops need more potassium sulfate; field crops, legumes, rape, potato and sugar Crops need to use more potassium than other crops. Saline soils and sandy soils in the arid regions require more potassium sulfate than normal soils.
Balanced fertilization.
The balanced fertilization referred to here refers to the application of potash with nitrogen and phosphorus fertilizers and other nutrient fertilizers. A large number of production practices and scientific experiments have shown that the benefits of high quality, high yield, high efficiency and environmental protection can only be achieved by applying the nutrient necessary and lacking nutrients and cooperating with other agricultural production measures. Which should pay special attention to soil fertilization, the amount of fertilizer will be controlled at the appropriate level, to prevent the amount of potassium is too large lead to crop calcium deficiency, magnesium deficiency.