Location: Zengcheng City, Guangzhou City, Guangdong Province Features: The food is fresh and tender, crispy and sweet.
1, apply sufficient base fertilizer
During this period, Chinese flowering cabbage was planted in Hunan. Because of the heavy rain and high soil humidity, it may encounter dry weather after seedling emergence, which is not conducive to timely supplement of nutrients. Therefore, the base fertilizer must be fully applied. The base fertilizer is mainly such fertilizers with long fertilizer efficiency as decomposed organic fertilizer or farmyard manure, generally 4000 kg per mu, and 30 kg of compound fertilizer and 40 kg of urea are used in combination. High soil moisture is conducive to the decay of organic fertilizer. Bury the base fertilizer in the soil layer to separate the seed and fertilizer, so as to prevent the seeds from burning and affect the emergence of seedlings.
2, timely topdressing
Top dressing should be applied according to different growth and development stages. The main principles are early, diligent and thin, light in the early stage and heavy in the middle and late stage, which means that top dressing should be applied early, diligently and thinly, with quick-acting nitrogen fertilizer as the main fertilizer, and diammonium carbonate and other quick-acting nitrogen fertilizers can be used as the main fertilizer in autumn when the temperature is low. Generally, it is required to be poured after 4 pm.
fertilizer applied during seedling stage
After the Chinese flowering cabbage emerges, when the first true leaf grows, it should be irrigated with 1% manure or 5% urea solution to raise the seedlings. If transplanting is needed, it is better to transplant the fourth to fifth true leaves. After successful seedling delay, the first topdressing should be carried out within 2-3 days, mainly with quick-acting nitrogen fertilizer, and the concentration should be lower to prevent root burning. After that, topdressing urea every 7 days or so.
Bud fertilizer
When flowering Chinese cabbage begins, we should pay attention to applying some compound fertilizer, and it is advisable to apply it by points, which requires vegetables with high soil moisture. If the soil is dry, we should water them before applying fertilizer to prevent nutrient loss, with an area of per mu15kg. Point application can be used when the density is not high.
3. Leaf seedling fertilizer
After harvesting the main stem, 2-4 tillering seedlings will occur. After harvesting the main stem in 85% of Chinese flowering cabbage in the whole field 1-2, urea and manure will be applied again to promote the growth and development of tillering seedlings, and 0.5% manganese chloride solution will be sprayed once before harvesting to reduce the content of some harmful substances in Chinese flowering cabbage, which will play a certain role in improving the quality of Chinese flowering cabbage.
Farmers should not only pay attention to the management of fertilizer and water, but also the management of pests and diseases and weeding in intertillage. Only by artificially creating a suitable growth environment for Chinese flowering cabbage can they achieve high yield and high quality.