First, the principle of fertilization Balanced fertilization is carried out according to the fertilizer requirements of each crop, soil nutrient supply status and fertilizer effect, and the corresponding fertilization amount and fertilization method are determined. The combination of organic fertilizer and inorganic fertilizer, the combination of base fertilizer and topdressing is the principle to achieve balanced fertilization.
2. Organic fertilizers that are harmless to organic fertilizers must be fermented and fermented to kill pathogenic microorganisms, eggs and weed seeds. Industrial waste, municipal waste and sludge, and farmyard fertilizers that do not meet the harmlessness index are prohibited.
3. The implementation of inorganic fertilizer compounding and specialization of fertilizer types should meet the fertilizer variety and quality requirements specified in the fertilizer quality standard (ny/t394), and try to use organic-inorganic compound fertilizer and various crop-specific compound fertilizers.
Second, the rice standardized fertilization technology fertilization should re-apply the base fertilizer, early chasing the fertilizer, skillfully use the benefit fertilizer, supplement the application of granular fertilizer. The amount of fertilizer applied was based on nitrogen fertilizer, and the amount of phosphorus and potassium was determined by the ratio of nitrogen, phosphorus and potassium. Apply 225-300 kg of urea per hectare. After determining the amount of nitrogen fertilizer, determine the amount of phosphorus-potassium fertilizer by nitrogen:phosphorus:potassium=1:0.5:0.3-0.5.
1. The seedbed soil is prepared by applying 10-15 kg of high-quality decomposed agricultural fertilizer per square meter of bed soil, 0.125 kg of strong nutrient solution, mixed with the prepared sieve bed soil, the bed soil thickness is about 10 cm, and the pH value is 4.5-5.5.
2. In the seedling stage of the seedling bed, the seedlings were found to be de-fertilized with 1.5 g to 2 g of ammonium sulfate per square meter, 0.25 g of zinc sulfate, and 100 times diluted for foliar application. After spraying, the leaves were rinsed with water in time. Six days before the start, 150 g of diammonium phosphate was applied per square meter, and the seedlings were sprayed with water after topdressing.
3. Honda applied fertilizer to increase farmyard manure and less fertilizer. 30 tons of fermented organic fertilizer per hectare, combined with drought and flood; applied per hectare of diammonium phosphate 112.5 ~ 150 kg, potassium sulfate 75 kg, combined with water to the whole layer.
4. Topdressing principle of topdressing rice: phlegm and fat, panicle fertilizer, grain fertilizer diameter.
(1) Apply 50 to 75 kg of urea per hectare before tillering.
(2) The initial application of panicle fertilizer is 50-75 kg per hectare and 50-75 kg of potassium sulfate. The addition of potassium fertilizer can increase the seed setting rate and 1000-grain weight, promote early maturity, enhance disease resistance and lodging resistance.
(3) Fertilizer is applied before heading, and urea is applied in 15~22.5 kg per hectare. Although the nitrogen uptake is reduced after heading, if the soil nitrogen supply is insufficient, the photosynthetic efficiency of the leaves will be reduced, and the appropriate amount of grain fertilizer can prevent premature senescence of the root leaves.
(4) If the root fertilizer is not applied with zinc fertilizer, it can be applied in the tillering stage with 50-100 g of zinc sulfate and 0.2% aqueous solution. Leaf spraying can be carried out with liquid fertilizer containing silicon and selenium (concentration according to the instructions), which can enhance the disease resistance of rice, mature early, improve the taste and nutritional quality of rice, and improve the value of commodities. Spraying with 0.2%-0.3% potassium dihydrogen phosphate or other liquid fertilizer during the grain filling period of Qisuiyi can prolong the survival rate of functional leaves in the late growth stage, accelerate the grain filling rate, reduce the emptying rate, increase the 1000-grain weight, and prevent delay. Type cold damage has a certain effect.
(Mudanjiang City Agricultural Technology Extension Station) Author: Song Yao Yuan
Source of information: Modern Agriculture
2. Organic fertilizers that are harmless to organic fertilizers must be fermented and fermented to kill pathogenic microorganisms, eggs and weed seeds. Industrial waste, municipal waste and sludge, and farmyard fertilizers that do not meet the harmlessness index are prohibited.
3. The implementation of inorganic fertilizer compounding and specialization of fertilizer types should meet the fertilizer variety and quality requirements specified in the fertilizer quality standard (ny/t394), and try to use organic-inorganic compound fertilizer and various crop-specific compound fertilizers.
Second, the rice standardized fertilization technology fertilization should re-apply the base fertilizer, early chasing the fertilizer, skillfully use the benefit fertilizer, supplement the application of granular fertilizer. The amount of fertilizer applied was based on nitrogen fertilizer, and the amount of phosphorus and potassium was determined by the ratio of nitrogen, phosphorus and potassium. Apply 225-300 kg of urea per hectare. After determining the amount of nitrogen fertilizer, determine the amount of phosphorus-potassium fertilizer by nitrogen:phosphorus:potassium=1:0.5:0.3-0.5.
1. The seedbed soil is prepared by applying 10-15 kg of high-quality decomposed agricultural fertilizer per square meter of bed soil, 0.125 kg of strong nutrient solution, mixed with the prepared sieve bed soil, the bed soil thickness is about 10 cm, and the pH value is 4.5-5.5.
2. In the seedling stage of the seedling bed, the seedlings were found to be de-fertilized with 1.5 g to 2 g of ammonium sulfate per square meter, 0.25 g of zinc sulfate, and 100 times diluted for foliar application. After spraying, the leaves were rinsed with water in time. Six days before the start, 150 g of diammonium phosphate was applied per square meter, and the seedlings were sprayed with water after topdressing.
3. Honda applied fertilizer to increase farmyard manure and less fertilizer. 30 tons of fermented organic fertilizer per hectare, combined with drought and flood; applied per hectare of diammonium phosphate 112.5 ~ 150 kg, potassium sulfate 75 kg, combined with water to the whole layer.
4. Topdressing principle of topdressing rice: phlegm and fat, panicle fertilizer, grain fertilizer diameter.
(1) Apply 50 to 75 kg of urea per hectare before tillering.
(2) The initial application of panicle fertilizer is 50-75 kg per hectare and 50-75 kg of potassium sulfate. The addition of potassium fertilizer can increase the seed setting rate and 1000-grain weight, promote early maturity, enhance disease resistance and lodging resistance.
(3) Fertilizer is applied before heading, and urea is applied in 15~22.5 kg per hectare. Although the nitrogen uptake is reduced after heading, if the soil nitrogen supply is insufficient, the photosynthetic efficiency of the leaves will be reduced, and the appropriate amount of grain fertilizer can prevent premature senescence of the root leaves.
(4) If the root fertilizer is not applied with zinc fertilizer, it can be applied in the tillering stage with 50-100 g of zinc sulfate and 0.2% aqueous solution. Leaf spraying can be carried out with liquid fertilizer containing silicon and selenium (concentration according to the instructions), which can enhance the disease resistance of rice, mature early, improve the taste and nutritional quality of rice, and improve the value of commodities. Spraying with 0.2%-0.3% potassium dihydrogen phosphate or other liquid fertilizer during the grain filling period of Qisuiyi can prolong the survival rate of functional leaves in the late growth stage, accelerate the grain filling rate, reduce the emptying rate, increase the 1000-grain weight, and prevent delay. Type cold damage has a certain effect.
(Mudanjiang City Agricultural Technology Extension Station) Author: Song Yao Yuan
Source of information: Modern Agriculture
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