Dedicated set fertilizer for yellow soil planted tobacco and fertilizing method thereof

Abstract

The invention provides a dedicated set fertilizer for yellow soil planted tobacco. The dedicated set fertilizer is prepared from a base fertilizer, a hole applied fertilizer and an additional fertilizer, wherein the base fertilizer, the hole applied fertilizer and the additional fertilizer are applied to different growth periods of the tobacco; the base fertilizer is an organic-inorganic compoundfertilizer, the hole applied fertilizer is a nitrate-sulfur compound fertilizer, and the additional fertilizer is a nitrate-sulfur compound fertilizer. A fertilizing method of the dedicated set fertilizer for yellow soil planted tobacco disclosed by the invention comprises the steps: applying the base fertilizer once when a tobacco land is ridged, applying the hole applied fertilizer 15 to 20 daysafter tobacco seedlings are transplanted and applying the additional fertilizer 25 to 30 days after the tobacco seedlings are transplanted. The dedicated set fertilizer disclosed by the invention hasnutrient balance and strong specificity, can meet requirements of the different periods of the tobacco for the nutrients, can improve a soil physical aggregate structure and a soil microbial ecological environment and can improve quality and yield of flue-cured tobacco.

Description

technical field [0001] The invention belongs to the fertilizer technology in the field of agricultural production, and in particular relates to a set fertilizer specially used for planting tobacco in yellow soil and a fertilization method thereof. Background technique [0002] Tobacco is an important economic crop in my country. The tobacco planting area in China is maintained at about 21.1 million mu all year round. In 2015, the tax and profit of the tobacco industry reached 1,143.6 billion yuan, occupying an important position in my country's national economy. Tobacco is an economic crop that pays equal attention to yield and quality. Scientific fertilization is an important part of flue-cured tobacco production and the key to improving the yield and quality of tobacco leaves. Excessive or low fertilization will have a great impact on the quality of flue-cured tobacco. Fertilizer varieties and fertilization methods are the key to regulating tobacco leaves. The core of yiel...

AI Technical Summary

Problems solved by technology

However, fertilization technology is the most difficult problem for the majority of tobacco farmers. Fertilization by tobacco farmers is mainly based on experience, and they do not pay attention to organic fertilizers and micro-fertilizers. It is also a relatively prominent technical link in tobacco leaf production. There is a certain gap between high-quality tobacco leaves

The survey shows that there are three main factors that affect the yield and quality of tobacco leaves in China: one is the lack of potassium in tobacco leaves in China, which is about 2.5%, while the potassium content of high-quality tobacco leaves is in the range of 4%-6%. Tobacco has good luster and fragrance, and strong combustibility; the second is that the yield per unit area of ​​tobacco leaves in China is low. In 2015, the average yield per unit area of ​​tobacco leaves in China was 2210.0kg / ha, which is low and has a certain potential for improvement; the third is In recent years, the degradation of tobacco soil has been very serious, the content of soil organic matter has decreased rapidly, the ratio of carbon to nitrogen is low, the soil structure is poor, the level of soil fertility and productivity have declined; soil acidification is obvious, and more than 40% of tobacco planting soil in China is acidic soil; soil nutrient supply is unbalanced; The content of soil aggregates and the number of beneficial microorganisms decrease, resulting in a poor microbial environment in the soil, which intensifies the damage of tobacco diseases and insect pests, and increases the incidence of black shank disease, root rot, root-knot nematode disease, and red spot disease in tobacco fields; tobacco leaves Insufficient oil content, poor aroma value, insufficient aroma, reduced quality of tobacco leaves, and changes in tobacco leaf style

It also makes some nutrient elements in the soil too much or too little, resulting in nutritional imbalance of tobacco plants, tobacco nutrient imbalance and other symptoms; poor growth of tobacco plants, low sugar and potassium content of tobacco leaves, insufficient tobacco leaf oil, poor aroma, miscellaneous Heavy air, which eventually leads to a decline in the quality of the tobacco leaf; making the sustainable production of tobacco leaf production poor