The correct method of foliar fertilization for napa cabbage

The most prominent features of foliar fertilization are that it saves fertilizer and acts quickly, and it has good effects on increasing napa cabbage yield and improving disease resistance and stress resistance.

Foliar fertilization on napa cabbage is generally arranged during the rosette stage, sprayed once every 7 to 10 days, for a total of 3 to 4 times. When spraying, to improve the effect, a small amount of laundry detergent can be added to the fertilizer solution as an adhesive. In addition, it is best to choose a windless sunny day and carry out the spraying after 4 p.m. The commonly used foliar fertilizers include: 100-fold urea solution, 100-fold monopotassium phosphate solution, 0.2% borax + 0.2% urea, 500-fold Plant Vigor Jinbang No. 1 solution, etc. Foliar fertilization can also be sprayed mixed with pesticides, such as 200-fold urea mixed with 700-fold amobam, which can improve the control effect of downy mildew. Pang Qiujuan