Chinese cabbage
　　 1 . Increase the amount of organic fertilizer applied. The organic fertilizer contains various trace elements which are beneficial to the growth of Chinese cabbage. The application of organic fertilizer can significantly improve the quality of Chinese cabbage, increase the yield, and improve the disease resistance of Chinese cabbage. Generally, 3000 to 5000 kg of decomposed organic fertilizer is applied per mu .
　　 2 . Spray grass ash leaching solution. Starting cabbage rosette stage, spray once every 7 days 0. 5 % of the ash leaching solution is sprayed 3 times, which can increase the yield by more than 15 %.
　　 3 . Supplement calcium preparations. From the start rosette stage, spray once every 7 days 0. 7 % calcium chloride, sprayed 5 times in a row , can effectively prevent calcium deficiency symptoms such as dry heartburn and improve disease resistance of plants.
　　 4 . Spray gibberellin. Starting package cabbage heart, spraying twice 30ppm of GA can accelerate the growth of Chinese cabbage, promote heart package, increased by about 17% yield.
　　 5 . Triacontanol. Cabbage Cabbage sprayed twice with 1ppm of triacontanol, 10 days interval can be increased about 20% yield.
　　 6 . Rare earth. Use 0 . 03 %, 0 . 05 %, 0 . The 08 % rare earth solution was sprayed in the rosette, heading and core stages of Chinese cabbage, which could increase the yield by more than 10 %.
　　 7 . Potassium dihydrogen phosphate. From cabbage rosette stage 0 spray once every 10 days. 5 % potassium dihydrogen phosphate, a total of 3 times, increased yield by about 13 %.
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