With the doubling of food production and benefits, crops are increasingly demanding nutrients such as nitrogen, phosphorus and potassium. In recent years, the large-scale application of nitrogen and phosphate fertilizers has basically satisfied the needs of crops, and the contradiction between supply and demand of potash fertilizer has become increasingly prominent. In many areas, the symptoms of potassium deficiency have appeared. The effect of applying small potash fertilizer is becoming more and more obvious. Potassium fertilizer application should be listed as crop yield increase and increase. The first measure.
First, the effect of potassium fertilizer production
1. Physiological function of potassium: Potassium can regulate the colloidal state of protoplasts and increase the intensity of photosynthesis of crops, promote the formation of carbohydrates, and have a good effect on the accumulation of starch and sugar in roots and tuber crops. Potassium can strengthen straw and strengthen Resilience, reduce disease and prevent lodging.
2. Effect of Potassium Fertilizer: Potassium fertilizer application has obvious yield increase. In the past few years, we have carried out more than 200 tests on 16 crops of different soil types in the county, all of which have obvious effects of increasing yield, with an average yield increase of 10%-20%. The overall trend of increasing production is vegetable crops > cash crops > food crops. The average yield of potatoes in vegetable crops increased by 54%, the average yield of peanuts in economic crops increased by 15%, the yield of corn increased by 16%, and the yield of rice increased by 13%. In order to explore the optimal potassium application rate and the best economic benefit, we conducted the unequal potash fertilizer test at multiple points for two consecutive years in 1997 and 1998. All the results show that the basis of nitrogen and phosphate fertilizer is fully guaranteed. Above, the optimum application rate of potassium fertilizer is 10-20 kg/667 m 2 , and the best economic benefit is 50 yuan per 667 m 2 pure.
Second, to achieve high yield and high efficiency of crops must be rational application of potash
1. The supply of potash will be one of the important measures to achieve efficient agriculture. There are three sources of available potassium in the soil. The first is the decomposition of soil minerals, the second is the application of organic fertilizer, and the third is the supplement of chemical potassium fertilizer. Under the current conditions of severe soil available potassium reduction in some areas and high levels of crop production, if only soil decomposition and organic fertilizer supplementation are far from meeting the needs of crops, it will inevitably cause crops to soil potassium. Plunder, the application rate of potassium fertilizer is not enough, and the ratio of application of the three major nutrients is not coordinated. Therefore, the application of potassium fertilizer should mention the status of equal weight with nitrogen and phosphate fertilizer, so that the application of potassium fertilizer is popularized as soon as possible in the county.
2. Rational application of nitrogen, phosphorus and potassium fertilizers. During the growth of crops, various nutrient elements are regularly and proportionally absorbed. The effects of various nutrient elements on the growth and development of crops are equally important, and they are irreplaceable, and each element is mutually Potassium is one of the three major nutrient elements for plant growth. Potassium fertilizer can increase the absorption and utilization of nitrogen fertilizer. Therefore, it is necessary to apply nitrogen, phosphorus and potassium fertilizers according to local conditions and nutrients according to the conditions of soil nutrient deficiency. The proportion of the crops meets the nutrient requirements of the crops. Generally, the nitrogen, phosphorus and potassium ratios are 1:0.5:0.4. However, in practice, the crops should be flexibly applied according to different crops and different soil fertility to achieve the goal of crop harvest.
3. Reasonable application of potassium fertilizer must do the following. 1 Potassium fertilizer should be considered in consideration of the potassium supply level of the soil, and the potassium fertilizer application plan should be formulated; 2 the application of potassium fertilizer should consider the production level and the application amount of nitrogen, phosphorus and potassium. Generally, the application of high-yield nitrogen and phosphorus fertilizer should increase the application of potassium fertilizer; Potash fertilizer should be considered for cropping and multiple cropping index. Potassium fertilizer should be added when the multiple cropping index is high. 4 Potassium fertilizer should be taken into account depending on the potassium requirement and potassium application effect of different crops. Potassium crops should be applied more; 5 Potassium fertilizer application After the soil, the fluidity is small, so the potassium fertilizer is generally used as the base fertilizer or the early topdressing, and the sandy soil with poor growth period or soil fertility can also be applied in several stages, and should be grasped before and after the light, in the plant growth stage. If the crop shows symptoms of potassium deficiency, affecting normal growth, foliar application of 2% potassium sulfate can be applied.
First, the effect of potassium fertilizer production
1. Physiological function of potassium: Potassium can regulate the colloidal state of protoplasts and increase the intensity of photosynthesis of crops, promote the formation of carbohydrates, and have a good effect on the accumulation of starch and sugar in roots and tuber crops. Potassium can strengthen straw and strengthen Resilience, reduce disease and prevent lodging.
2. Effect of Potassium Fertilizer: Potassium fertilizer application has obvious yield increase. In the past few years, we have carried out more than 200 tests on 16 crops of different soil types in the county, all of which have obvious effects of increasing yield, with an average yield increase of 10%-20%. The overall trend of increasing production is vegetable crops > cash crops > food crops. The average yield of potatoes in vegetable crops increased by 54%, the average yield of peanuts in economic crops increased by 15%, the yield of corn increased by 16%, and the yield of rice increased by 13%. In order to explore the optimal potassium application rate and the best economic benefit, we conducted the unequal potash fertilizer test at multiple points for two consecutive years in 1997 and 1998. All the results show that the basis of nitrogen and phosphate fertilizer is fully guaranteed. Above, the optimum application rate of potassium fertilizer is 10-20 kg/667 m 2 , and the best economic benefit is 50 yuan per 667 m 2 pure.
Second, to achieve high yield and high efficiency of crops must be rational application of potash
1. The supply of potash will be one of the important measures to achieve efficient agriculture. There are three sources of available potassium in the soil. The first is the decomposition of soil minerals, the second is the application of organic fertilizer, and the third is the supplement of chemical potassium fertilizer. Under the current conditions of severe soil available potassium reduction in some areas and high levels of crop production, if only soil decomposition and organic fertilizer supplementation are far from meeting the needs of crops, it will inevitably cause crops to soil potassium. Plunder, the application rate of potassium fertilizer is not enough, and the ratio of application of the three major nutrients is not coordinated. Therefore, the application of potassium fertilizer should mention the status of equal weight with nitrogen and phosphate fertilizer, so that the application of potassium fertilizer is popularized as soon as possible in the county.
2. Rational application of nitrogen, phosphorus and potassium fertilizers. During the growth of crops, various nutrient elements are regularly and proportionally absorbed. The effects of various nutrient elements on the growth and development of crops are equally important, and they are irreplaceable, and each element is mutually Potassium is one of the three major nutrient elements for plant growth. Potassium fertilizer can increase the absorption and utilization of nitrogen fertilizer. Therefore, it is necessary to apply nitrogen, phosphorus and potassium fertilizers according to local conditions and nutrients according to the conditions of soil nutrient deficiency. The proportion of the crops meets the nutrient requirements of the crops. Generally, the nitrogen, phosphorus and potassium ratios are 1:0.5:0.4. However, in practice, the crops should be flexibly applied according to different crops and different soil fertility to achieve the goal of crop harvest.
3. Reasonable application of potassium fertilizer must do the following. 1 Potassium fertilizer should be considered in consideration of the potassium supply level of the soil, and the potassium fertilizer application plan should be formulated; 2 the application of potassium fertilizer should consider the production level and the application amount of nitrogen, phosphorus and potassium. Generally, the application of high-yield nitrogen and phosphorus fertilizer should increase the application of potassium fertilizer; Potash fertilizer should be considered for cropping and multiple cropping index. Potassium fertilizer should be added when the multiple cropping index is high. 4 Potassium fertilizer should be taken into account depending on the potassium requirement and potassium application effect of different crops. Potassium crops should be applied more; 5 Potassium fertilizer application After the soil, the fluidity is small, so the potassium fertilizer is generally used as the base fertilizer or the early topdressing, and the sandy soil with poor growth period or soil fertility can also be applied in several stages, and should be grasped before and after the light, in the plant growth stage. If the crop shows symptoms of potassium deficiency, affecting normal growth, foliar application of 2% potassium sulfate can be applied.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Phosphorus Pentoxide is white powder, soluble in water,dissolved in sulfuric acid.Insoluble in acetone and ammonia.Used in gas and liquid desiccant, organic synthetic dehydrating agent and making high purity Phosphoric Acid and phosphoric salt.
Phosphorus pentoxide is a chemical compound with molecular formula P4O10 (with its common name derived from its empirical formula, P2O5). This white crystalline solid is the anhydride of phosphoric acid. It is a powerful desiccant and dehydrating agent.
Phosphorus Pentoxide
Phosphorus Pentoxide,Phosphorus Pentoxide Formula,Phosphorus Pentoxide Uses
SJZ Chem-Pharm Co., Ltd. , http://www.sjzchem-pharm.com