Q: My family has 500 kg of commercial organic fertilizer per acre of cabbage-based fertilizer, and 50 kg of compound fertilizer with 17% nitrogen, phosphorus, and potassium content. Why is it still slow?
A: There is a certain limit for the nutrient absorption of any crop. If the limit is exceeded, the concentration of the soil solution will increase, causing the water in the root cells of cabbage to overflow and the phenomenon of reverse osmosis. Dehydration of cabbage cells can inhibit growth and development. Application of excess commercial organic fertilizer and reverse osmosis restricted the growth of cabbage. There are three suggested countermeasures. The first is to dilute the soil solution concentration with irrigation; the second is to spray 0.01% Baoliang (brassinolide) or Tianfengsu solution 2 or 3 times to coordinate the nutrient balance in cabbage; the third is to pay attention to the appropriate amount of organic fertilizer .
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