How to fertilize Panax notoginseng? A detailed guide to the latest methods
Panax notoginseng is one of China's important medicinal herbs, with extremely high medicinal value and health-care value, relatively high economic returns, and a fairly wide growing area. It needs a large amount of nutrients during growth, so rational fertilization is extremely important when planting. So how should Panax notoginseng be fertilized? Let's take a look at the detailed guide below.
1. Nutrient requirement patterns
The nutrient requirements of Panax notoginseng during growth are lower than those of other crops. Among the conventional nitrogen, phosphorus and potassium fertilizers, its demand for potassium is the highest, far exceeding that of other crops, while its demand for phosphorus is relatively low. Its fertilizer needs also differ at different growth stages. August to October is the peak period of fertilizer uptake for Panax notoginseng, and in December its demand for phosphate fertilizer is highest. Plants 2-3 years old have a relatively large demand for fertilizer during the flowering and fruiting stage, accounting for more than half of the annual fertilizer application.
2. Fertilization principles
The fertilization principles for Panax notoginseng are based mainly on base fertilizer, supplemented by topdressing, with various fertilizers and nutrients matched to one another, while also applying foliar fertilizer at the appropriate time. To cultivate high-quality Panax notoginseng, farmyard manure must be the main fertilizer, paired with a small amount of nitrogen-phosphorus-potassium compound fertilizer. Generally, the best ratio of the three is 2:1:3. Attention should be paid to the application of nitrogen fertilizer. Excessive nitrogen fertilizer will cause the quality of Panax notoginseng to decline, while too little potassium fertilizer will lead to low yield and reduced returns.
3. Fertilization methods
Fertilization of Panax notoginseng is based mainly on base fertilizer. Generally, according to the soil fertility conditions, apply 2500-4000 kg of farmyard manure per mu, paired with 100 kg of superphosphate and 10-15 kg of potassium sulfate. It should be noted that the farmyard manure must be fully decomposed, otherwise it is unfavorable to the growth of seedlings and may even cause large numbers of seedlings to die. During the year, apply decomposed farmyard manure 2-3 times as topdressing, with 2000-2500 kg per mu each time, and compound fertilizer 2-3 times, with 10-15 kg per mu each time, to promote plant growth. In addition, a 0.2% concentration potassium dihydrogen phosphate solution or other low-concentration trace element fertilizers can be sprayed at the appropriate time.
The above is an introduction to the fertilization methods for Panax notoginseng. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.