Spring cabbage is not strict with soil conditions, and the soil can be cultivated in general, but it is best to use clay loam rich in organic matter. Neutral or slightly alkaline soil is beneficial to the growth of spring Chinese cabbage, soil with strong acidity or alkalinity, and poor growth of spring Chinese cabbage has physiological obstacles. Acidic soil is also conducive to the growth of pathogens and induces bacterial diseases. According to the determination, the amount of nitrogen and potassium fertilizer required by spring cabbage is more than that of phosphate fertilizer. The ratio of nitrogen, phosphorus and potassium absorption is about 1.0:0.4:1.1. When 5,000 kilograms of spring cabbage is produced per mu, it is necessary to absorb nitrogen from the soil. Kilograms, 4.7 kg of phosphorus pentoxide and 12.5 kg of potassium oxide. Nitrogen is beneficial to the growth of leaves, phosphorus can promote root development, potassium can promote the production and transport of photosynthetic products, and can improve plant resistance. Therefore, pay attention to the following aspects when fertilizing: Apply enough base fertilizer. Cabbage has a long growing season and requires a large amount of high-quality organic fertilizer with long-term fertilizer efficiency. Therefore, it is very important to apply a large amount of manure as a base fertilizer. Generally, the amount of manure in the mu is not less than 5,000 kg. Before cultivating land, 60% of the manure was scattered in the ground and turned into the soil. Before the shovel, 40% of the manure was scattered on the ground and into the shallow soil, and then ridged. Superphosphate or compound fertilizer should be applied together in the application of fertilizer, 50-75 kg per mu. Apply a good seedling fertilizer. In order to ensure sufficient nutrients in the seedling stage, it is necessary to apply quick-acting fertilizers as “lifting fertilizerâ€. Use 4 kg of ammonium nitrate per mu or 5-8 kg of ammonium sulfate. Apply to the seeding point, mix well with the soil before the live broadcast, and then water and sow. After catching up with the fat. The rosette leaves growing in the rosette stage are the organs that will produce a large number of photosynthetic products in the future during the ball-forming period. Fully fertilizing and watering is the key to ensure the strong growth of the rosette leaves, but at the same time, it is necessary to prevent the rosette leaves from growing and causing the heart to end. "Fat fertilizer" should be applied when there are a few plants in the field to start the group, generally 800 to 1500 kg of manure, 50 to 100 kg of plant ash, or 10 to 15 kg of ammonium nitrate, 7 to 10 of phosphorus and potassium. kg. Direct fertilization of cabbage should be applied to the small ditch of 8~10 cm on the edge of the plant and the soil should be covered. The transplanted cabbage is applied to the gully, and the soil is mixed well and then planted. If there is a long-term phenomenon in the late period of the rosette, it is necessary to take the "small seedlings" measure. Make up the ball fat. The ball-forming period is the period in which the product is formed, and the assimilation is the strongest. Therefore, the amount of fertilizer and water is large. Apply the ball-shooting fertilizer 5 to 6 days before the core, and use a large amount of fertilizer to maintain a long-lasting fertilizer, especially to increase the application of potassium fertilizer. Generally, 20 kg of ammonium nitrate is applied, 10 to 15 kg of superphosphate and potassium sulfate, or 1600 to 2,500 kg of dried manure, and 50 to 100 kg of grass ash is used as a ball-forming fertilizer. In order to make the nutrients last, it is best to mix the fertilizer with the decomposed manure, and it is advisable to open 8~10 cm deep ditch between rows. This topdressing has the effect of enriching the inside of the leaf ball and promoting "irrigation", so it is also called "infusion of heart fat". This article URL: How to fertilize Chinese cabbage, high yield, spring cabbage, scientific fertilization yield increase China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.apipepdites.com
How to fertilize Chinese cabbage, high yield, spring Chinese cabbage, scientific fertilization output increase