Food rice vinegar contains 17 kinds of amino acids such as lysine, glutamic acid and lactic acid, sugars, glycerin, aldehyde compounds, and various nutrients such as protein, calcium, phosphorus, iron, and vitamins, which can be directly absorbed and utilized by leaves. Spraying vinegar can make seedlings grow neatly, stoutly, with high seedling height and significantly increased ground diameter. Use 300 to 500 times vinegar to spray the pine seedlings, spray once every 7 days, spray 3 times in total, increase the seedling rate by more than 10% than spraying vinegar; use 200 times vinegar to spray Poplar Poplar seedlings, from 7 At the beginning of the month, spraying once every 10 days, the amount of 0.25 kg per acre is used. After spraying, leaf green, leaf thickness, and luster are higher, 13.4% higher than non-sprayed vinegar, 11.8% increase in ground diameter, and a 33.3 increase in the rate of production. %. Seedling height is generally more than 3 meters. To this end, the general seedlings are sprayed once every 7-10 days in the fast-growing period and can be sprayed 3 to 5 times. Diagnosis Device,Medical Diagnosis Devices,Diagnosis Therapy Device,Health Diagnosis Device Medton Medical , https://www.medton.cn