Supporting measures for application of new coated controlled release fertilizer
2018-10-02 23:02:31
1. The coated controlled release fertilizer is a type of fertilizer that increases the fertilizer efficiency (fertilizer utilization rate) by pre-setting the release mode of the fertilizer during the crop growing season by synthesizing the nutrient release law with the crop nutrient absorption.
2. The main function of controlled release fertilizer is to delay the release of initial nutrients, prolong the effective period of plant nutrient absorption and utilization of fertilizers and set the effective release time of nutrients.
3. Since the nutrient release rate and release period of coated controlled release fertilizer are designed according to crop growth and fertilizer absorption rules, only one controlled release fertilizer can be applied to one season crop or one crop to meet the nutrient demand of the crop throughout the growing season.
4. The formulation ratio of NPK and its trace elements in the controlled release compound fertilizer of organic polymer coating is determined according to the demand of crops and the abundance of different soils. Crop-specific or general-purpose coated controlled release composites Fertilizer, depending on the crop and soil conditions, is reduced by one-third to half of the normal control fertilizer. The time interval between fertilization is determined according to the length of the controlled release period of the fertilizer.
5. The application rate of coated controlled release fertilizer should be determined based on the target yield of the crop, the fertility level of the soil and the nutrient content of the fertilizer. At present, the large-area application of large-area crops is usually the blending of coated fertilizer and quick-acting fertilizer. The application amount of the coated fertilizer should first consider the nutrient type, content and proportion of the coated fertilizer. For example, a blended fertilizer contains only 30% sulfur-coated urea, and the other 70% is a conventional quick-acting compound fertilizer. If the application of coated urea can reduce the application rate by one-third, the application amount of the fertilizer can only be reduced by 30. % of the nitrogen in the coated urea is only about 10% lower than the conventional blended fertilizer, and the ratio of available phosphorus and potassium is correspondingly increased, because only the blended fertilizer is controlled. Nitrogen release without phosphorus and potassium controlled release.
6. The application method of coated controlled release fertilizer should be carried out according to the characteristics of planting and growth of different crops. For crops with dense and even distribution of roots such as rice and wheat, the recommended application amount of controlled release fertilizer should be applied before sowing or transplanting. Spread it evenly on the surface at one time, plant it after ploughing, and no longer topdress during the growth period.
7. For crops with large spacing such as corn, cotton, peanuts, etc., apply a single ditch base according to the recommended application of special coated controlled release fertilizer to the lower part of the seed or 5 to 10 cm near the side of the seed, pay attention to the sulfur envelope. Urea and blended fertilizers of coated fertilizers and quick-acting fertilizers cannot be directly contacted with seeds to avoid burning or burning.
8. Fruit trees such as apples, peaches, pears, etc. can open 6-8 strips about 1 meter away from the trunk, about 20 centimeters deep, near the trunk, shallower, and the outer periphery of the canopy is deep, and then the controlled release fertilizer is applied and buried. earth. In addition, the interval between top dressings should be determined according to the release period of controlled release fertilizer.
9. When horticultural transplanting crops are used as base fertilizer, first dig a pit, apply the recommended amount of coated controlled release fertilizer to the bottom of the pit, add soil or matrix and fertilizer, and place the transplanted plant on the mixed fertilizer. Landfill and then water.
10. When the potted plant is used as the base fertilizer, the coated controlled release fertilizer can be mixed with the soil or the substrate, and the application amount depends on the volume of the pot and the volume of the soil or the matrix that can be loaded into the soil, and the chamber receives less sunlight in the chamber. The dosage can be halved; the amount used for potting crops is the same as that of the base fertilizer, and the fertilizer is evenly applied to the soil or substrate surface under the plant leaf crown. According to the release period of controlled release fertilizer, it should be applied once every 3 to 9 months.
A large number of experiments and demonstrations show that the controlled release time of coated controlled release fertilizer can be 2 to 12 months, and it is extremely significant in rice, corn, wheat, cotton, peanut, tobacco, fruit trees, vegetables, flowers, lawns and other crops. The effect of increasing yield, improving quality or enhancing ornamental value, the utilization rate of nitrogen fertilizer is 50% to more than double that of common control fertilizer. When the dosage is reduced by one-third to half, there is still obvious increase in yield or growth. The effect, and can improve the quality, one season crop, can be used once, saving labor and time. At the same time, the application of coated controlled release fertilizer can significantly reduce the volatilization and leaching of fertilizer nitrogen, greatly improve the utilization of fertilizer nutrients, not only save fertilizer resources, but also greatly reduce fertilization to the atmosphere and water environment. Pollution.
2. The main function of controlled release fertilizer is to delay the release of initial nutrients, prolong the effective period of plant nutrient absorption and utilization of fertilizers and set the effective release time of nutrients.
3. Since the nutrient release rate and release period of coated controlled release fertilizer are designed according to crop growth and fertilizer absorption rules, only one controlled release fertilizer can be applied to one season crop or one crop to meet the nutrient demand of the crop throughout the growing season.
4. The formulation ratio of NPK and its trace elements in the controlled release compound fertilizer of organic polymer coating is determined according to the demand of crops and the abundance of different soils. Crop-specific or general-purpose coated controlled release composites Fertilizer, depending on the crop and soil conditions, is reduced by one-third to half of the normal control fertilizer. The time interval between fertilization is determined according to the length of the controlled release period of the fertilizer.
5. The application rate of coated controlled release fertilizer should be determined based on the target yield of the crop, the fertility level of the soil and the nutrient content of the fertilizer. At present, the large-area application of large-area crops is usually the blending of coated fertilizer and quick-acting fertilizer. The application amount of the coated fertilizer should first consider the nutrient type, content and proportion of the coated fertilizer. For example, a blended fertilizer contains only 30% sulfur-coated urea, and the other 70% is a conventional quick-acting compound fertilizer. If the application of coated urea can reduce the application rate by one-third, the application amount of the fertilizer can only be reduced by 30. % of the nitrogen in the coated urea is only about 10% lower than the conventional blended fertilizer, and the ratio of available phosphorus and potassium is correspondingly increased, because only the blended fertilizer is controlled. Nitrogen release without phosphorus and potassium controlled release.
6. The application method of coated controlled release fertilizer should be carried out according to the characteristics of planting and growth of different crops. For crops with dense and even distribution of roots such as rice and wheat, the recommended application amount of controlled release fertilizer should be applied before sowing or transplanting. Spread it evenly on the surface at one time, plant it after ploughing, and no longer topdress during the growth period.
7. For crops with large spacing such as corn, cotton, peanuts, etc., apply a single ditch base according to the recommended application of special coated controlled release fertilizer to the lower part of the seed or 5 to 10 cm near the side of the seed, pay attention to the sulfur envelope. Urea and blended fertilizers of coated fertilizers and quick-acting fertilizers cannot be directly contacted with seeds to avoid burning or burning.
8. Fruit trees such as apples, peaches, pears, etc. can open 6-8 strips about 1 meter away from the trunk, about 20 centimeters deep, near the trunk, shallower, and the outer periphery of the canopy is deep, and then the controlled release fertilizer is applied and buried. earth. In addition, the interval between top dressings should be determined according to the release period of controlled release fertilizer.
9. When horticultural transplanting crops are used as base fertilizer, first dig a pit, apply the recommended amount of coated controlled release fertilizer to the bottom of the pit, add soil or matrix and fertilizer, and place the transplanted plant on the mixed fertilizer. Landfill and then water.
10. When the potted plant is used as the base fertilizer, the coated controlled release fertilizer can be mixed with the soil or the substrate, and the application amount depends on the volume of the pot and the volume of the soil or the matrix that can be loaded into the soil, and the chamber receives less sunlight in the chamber. The dosage can be halved; the amount used for potting crops is the same as that of the base fertilizer, and the fertilizer is evenly applied to the soil or substrate surface under the plant leaf crown. According to the release period of controlled release fertilizer, it should be applied once every 3 to 9 months.
A large number of experiments and demonstrations show that the controlled release time of coated controlled release fertilizer can be 2 to 12 months, and it is extremely significant in rice, corn, wheat, cotton, peanut, tobacco, fruit trees, vegetables, flowers, lawns and other crops. The effect of increasing yield, improving quality or enhancing ornamental value, the utilization rate of nitrogen fertilizer is 50% to more than double that of common control fertilizer. When the dosage is reduced by one-third to half, there is still obvious increase in yield or growth. The effect, and can improve the quality, one season crop, can be used once, saving labor and time. At the same time, the application of coated controlled release fertilizer can significantly reduce the volatilization and leaching of fertilizer nitrogen, greatly improve the utilization of fertilizer nutrients, not only save fertilizer resources, but also greatly reduce fertilization to the atmosphere and water environment. Pollution.
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