Organic fertilizer here we specially refer to humic acid fertilizer. It can release fixed nitrogen, phosphorus and potassium from soil and promote soil fertility. Especially in the old greenhouse, the effect is more remarkable. In order to ensure that vegetables absorb enough nutrition, it is suggested that vegetable farmers should rotate organic fertilizers and compound fertilizers.
Choose humic acid water soluble fertilizers
Humic acid fertilizer can improve the utilization rate of phosphorus, potassium and some trace elements in soil. It has synergistic effect on phosphorus and potassium. On the basis of increasing humic acid fertilizer, the amount of chemical fertilizer can be reduced by about 1/3.
The products we suggested for greenhouse are: Humic acid organic fertilizer, nitro humic acid, ammonium humate, potassium humate, ammonium humate, humic acid phosphate fertilizer.
Choose fully water soluble fertilizer
The amount of fully water soluble fertilizer consumption is small. The greenhouse of per 665 ㎡ can only use 5-8 KGS. The utilization rate is as high as 85%. It can supplement the nutrition needed by crops and rotate with biological bacteria fertilizer. Which is worth popularizing.
Vegetable greenhouse is a relatively closed production environment. Lack of organic matter supplement for a long time. It is easy to induce rational diseases. But this disease is easy to be considered as bacterial or fungal disease. Chemical pesticide treatment is not helpful.
Vegetable fertilization should be based on improving soil fertility. Reducing nitrate content. Improving vegetable quality and increasing yield. Take organic fertilizer as the main, popularize formula fertilizer. Achieve nitrogen fixation, phosphorus stability, potassium increased. Advocate the use of organic-inorganic compound fertilizer, organic-inorganic mixed fertilizer and organic base fertilizer.