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I choose the aging greenhouse fertilization

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  Selection of biological fertilizer biological fertilizer can release the nitrogen, phosphorus, potassium and fixed in the soil, improve soil fertility. Application of biological fertilizer in aged i

  Selection of biological fertilizer biological fertilizer can release the nitrogen, phosphorus, potassium and fixed in the soil, improve soil fertility. Application of biological fertilizer in aged in the greenhouse effect is more significant. In order to ensure adequate nutrition, biological fertilizer and compound fertilizer recommendations rotation application. Choosing humic fertilizer because of high content of nitrogen, phosphorus, potassium and other nutrients in aged soil, humic acid fertilizer can improve the phosphorus, potassium in the soil and the use of some trace elements in the base rate, increasing application of humic acid fertilizer, can be appropriate to reduce the amount of chemical fertilizer, generally can be reduced about 1/3. Vegetables are commonly used in the production of humic acid fertilizer with nitro humic acid, ammonium humate, sodium humic acid, potassium humate, nitro humic acid potassium, humic acid, fulvic acid diammonium phosphate fertilizer, farmers can choose the application. Select all the water soluble fertilizer completely water soluble less amount of fertilizer, 1 acres of greenhouse an impulse 5-7.5 kg can be, but the utilization rate is in 85% above, can replenish crop nutrients.

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