The latest course on fertilization techniques and methods of kale

Chinese kale is a kind of biennial herb belonging to Brassica genus of Cruciferae. It has a long history of cultivation. It has the effects of diuresis, phlegm elimination, detoxification, dispelling wind, relieving fatigue, clearing heart and improving eyesight. When planting Chinese kale, it is very important to master its fertilization technology, so how should Chinese kale be fertilized? Let's take a look at the detailed introduction together with Xiaobian.

1. Principle of fertilization

Chinese kale to nutrition organs for fresh food, so in order to improve yield, fertilization must be based on basal fertilizer, topdressing supplemented, generally in the planting after the beginning of topdressing, topdressing to take the early and late to thin, and the middle to thick principles. Watering and topdressing in seedling growth period can promote plant vegetative growth, increase leaf area and lay foundation for flowering.

2. Apply enough basal fertilizer

Base fertilizer should be carried out according to the fertility status of the soil and the expected yield. If the fertility is medium, and the current yield is 1500-2000 kg, 2500-3000 kg and 15-21 kg of nitrogen, phosphorus and potassium compound fertilizer should be applied per mu as base fertilizer. Pay attention to the full decomposition of farm manure to avoid death. Less fertilizer should be applied to the better soil fertility, while more fertilizer should be applied to the poor soil fertility, so as to ensure the nutritional requirements of the whole growth period of Chinese kale.

3. Timely topdressing

During the whole growth period of Chinese kale, topdressing should be applied many times in time. From seedling stage to harvest, the seedling stage should adopt the method of frequent and thin application. Generally, topdressing should be applied once a week, mainly with thin manure water. After planting, in order to ensure the yield and quality of the main moss, it is necessary to re-apply moss fertilizer. Generally, 10 kg urea and 30 kg compound fertilizer should be applied per mu every 7-10 days. In order to avoid fertilizer damage to roots, the method of spraying should be adopted. After harvesting the main moss, topdressing should be applied in time to promote the development of side moss. The usage and dosage are consistent with the fertilizer for promoting moss.

4. Precautions

The leaf area of Chinese kale is large, transpiration is large, but the root system is shallow, so in order to improve the yield, it is very important to supply sufficient nitrogen fertilizer. According to practice, it is proved that providing sufficient nitrogen fertilizer in the growth period of Chinese kale is the key to its high yield. Insufficient nitrogen fertilizer makes the plant short, the leaves small, and the base leaves easy to wither and fall off. However, if the nitrogen fertilizer is too large, it is easy to cause disease infestation.

The above is an introduction to broccoli fertilization technology. I hope it can help you. If you want to know more about it, please pay attention to us.