Chinese herbal medicine foliar fertilization is simple, convenient, low cost, quick and effective, and has a positive effect on increasing the yield and quality of Chinese herbal medicine.
Roots and rhizomes such as Salvia miltiorrhiza, Radix Astragali, Chinese yam, Dihuang and Pinellia, foliar fertilization mainly phosphorus and potassium fertilizers, can be sprayed with 0.4% potassium dihydrogen phosphate solution or 2% calcium perphosphate leaching solution, 4% ash ash leaching solution. The spraying time is generally in the middle and late growth stages.
Fruit seed kernels such as alfalfa, burdock, etc., foliar fertilization is mainly composed of nitrogen, phosphorus, potassium mixed liquid or multi-component compound fertilizer. Use 1% urea plus 2% calcium perphosphate leaching solution plus 1% potassium sulfate mixture, or spray with 0.2%-0.3% potassium dihydrogen phosphate solution. Spraying 1 or 2 times in the middle and late growth stages is effective for improving yield and quality.
Whole grasses, flowers such as andrographis, honeysuckle, safflower, etc., commonly used urea for foliar application, the concentration is 1% -2%, spraying 50-60 kg per acre, spraying 1-3 times throughout the growth period.
Fertilization time should be suitable for foliar fertilization. Generally, it is sunny in the morning, and it cannot be sprayed on rainy days. In case of rain within 3 hours after spraying, it should be sprayed after the weather.
When the concentration of fertilizer is suitable for the concentration of fertilizer, it will not only increase the cost, but also cause fat damage and cause losses. When using micro-fertilizer, special attention should be paid. Spray a phosphorus-containing fertilizer such as superphosphate. After soaking for 24 hours, take the supernatant for use.
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