Hemp yield high fertilization skills

Hemp species are important economic crops and industrial raw materials. Our province is also the main producing area of ​​hemp, but in the production practice, because some farmers do not master scientific fertilization techniques, resulting in low yield of hemp crops and poor planting efficiency, This edition is now selected to compile several articles on high-yielding fertilization techniques for bast fiber to provide reference for farmers' friends.

Hemp

If kenaf has a high yield of 400-500 kilograms per mu, it will require 15-20 kg of nitrogen fertilizer, 6-10 kg of phosphate fertilizer and 20 kg of potash fertilizer per acre. The application method is as follows: 1. Apply basal fertilizer. Kenaf applied basal fertilizer should be farm-based fertilizer, generally use compost, circulatory, human urine excrement, pig calf dung and so on. Per acre can be applied soil mixed fertilizer 4000-5000 kg, 4000-5000 kg of human and animal manure, 15-25 kg of superphosphate. 2, seed fertilizer. In order to promote rapid growth at seedling stage, sowing can be applied fertilizer, can apply urea 2 - 2.5 kg per acre, if there is no phosphate fertilizer in the base fertilizer, available superphosphate 5 kg for seed fertilizer, strong seedlings role. 3, top dressing. The kenaf top dressing can be divided into two to three times. For the first time, Miao Fei can be used, and 4-5 kg ​​of urea per mu can be used to promote Miao Qi Miao. The second time to apply long rod fertilizer, kenaf grow to 30 cm high is the period of strong absorption of nutrients, the top dressing to be re-applied, the amount of application should account for about 60% of the total amount of fertilizer. Per acre can apply urea 5-6 kg, potassium chloride 10 kg, in order to ensure the growth of kenaf and stems of the normal development.

jute

Studies have shown that: If the average yield of fine 500 kg of jute, need nitrogen 25.64 kg, phosphorus 16.9 kg, 23.87 kg of potash. Its application method is: 1, base fertilizer. According to the characteristics of the required fertilizer of jute, the nitrogen, phosphorus, and potassium nutrients in the base fertilizer account for 29.7% of the total nutrients, 57.6% of phosphorus, and 32.7% of potassium. Basal fertilizers account for 50% to 60% of farmyard manure, and farmyard manure should be applied before turning to the ground. Each mu can be applied with pigs, cow manure 1000-1500 kg, or soil composting 4000-1 million kg. 2, top dressing. The top dressing of jute can be divided into 3 times. Every time after topdressing Miaofei, urea can be applied 4-5 kg ​​per mu for strong seedlings, and human feces or livestock dung can also be used to dilute the water. The second time the remedy and long fertilizer was applied, this period was the most vigorous growth of jute and required a lot of nutrients to help with more fertilization. Each mus can be topped with 5-10 kg of urea and 10 kg of potassium chloride. -50 kg, the fertilizer effect is better. The above-mentioned fertilizers were applied at the height of 60-70 cm and 90-120 cm in jute, respectively, and the yield increase effect was significant.

Castor

The latest research findings of the Institute of Chinese Materia Medica Academy of Bast Fiber Research show that the high yield of 150-250 kilograms of ramie fiber produces 30 kg of nitrogen fertilizer, 10.2-23.9 kg of phosphate fertilizer, and 10.7-24.5 kg of potash fertilizer during the entire growth period.

Its application method is: 1. Reapply basal fertilizer. Basal fertilizer is the basis for ensuring that ramie production has sufficient nutrients, and the general application amount should account for 40% to 60% of the total fertilizer (mainly farmyard manure). Generally, 1600 kg of urine manure can be applied per acre, plus phosphorus and potassium fertilizer 15 - 25 kg. 2, application of fertilizer. The application of top-dressing ramie depends on the length of the growing period. When the top-dressing amount is small, the ramie with a short growing period can concentrate 1 topdressing and apply 18 kg of urea per acre. The topdressing amount is more, if a topdressing application can cause fertilizer loss, it can be divided into two fertilizers, the first time is Qimiao fertilizer, the amount of fertilizer is less, and about 10 kg of urea per mu can be used to promote Miao Qi Miao Zhuang , increase the number of effective ramets. The second fertilizer is a long pole fertilizer. When the seedling height is about 60 cm, it is applied before the closure of the line to promote the growth of the hemp plant. Generally, 15-20 kg of urea is applied per acre. (Li Guang)

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