Tobacco culturing method applying large holes for concentrated fertilization

Abstract

The invention relates to a tobacco culturing method applying large holes for concentrated fertilization. The method is applicable to plain areas of Henan province, and mainly comprises the steps that a base fertilizer is not applied in a culturing process; according to the planting density (16500-18000 plants / hm<2>), the large holes are dug at central positions of tobacco plants planted on a tobacco ridge in a tobacco seedling transplanting process; and various fertilizers are mixed uniformly, applied in the holes according to the calculated fertilization amount of each plant, and sealed after being mixed with soil in the holes sufficiently and uniformly. According to the method, soil water and fertilizer nutrition absorption of the tobacco plants and coordination of water, the fertilizers, air and heat are facilitated; a supply of mineral elements such as N, P,K and Cl is optimized; root development and thickening of the tobacco plants can be facilitated; the disease-resistant ability of tobaccos is improved; the growth advantage of a whole growth period is obvious; resource waste and environmental pollution due to blind fertilization are avoided; the production cost is lowered; effects of oil increasing, aroma enhancing, potassium increasing, alkali reducing, chlorine reducing and starch reducing are exerted in an aspect of improving the quality of tobacco leaves; the internal quality of the tobacco leaves is improved; and economic indicators of the tobacco leaves are increased remarkably.

Description

technical field [0001] The invention relates to a method for cultivating crops, in particular to a method for cultivating tobacco which is suitable for the plain area of ​​Henan Province and uses concentrated fertilization in large holes. Background technique [0002] Tobacco is one of the important economic crops in my country, ranking first in the world both in terms of total area and total output. Although the proportion of tobacco in my country's crop cultivation area is small, its economic benefits are high and it is an important part of the country's fiscal revenue. Tobacco, as a raw material in the cigarette industry, has always attached importance to its quality. Especially after the issue of "smoking and health" was raised, there were higher requirements for the quality of tobacco. [0003] The quality of tobacco leaves is not only affected by climate, soil, crop rotation system, etc., but also has a lot to do with fertilization methods. Under relatively stable e...

AI Technical Summary

Problems solved by technology

However, in recent years, due to the huge changes in land use patterns, planting systems, fertilization systems, etc. in this area, soil nutrient imbalance and disease intensification have posed a great threat to tobacco leaf production, and the characteristics of tobacco leaves in this area have gradually lost, which is reflected in the grade of tobacco leaves. The structure is unreasonable, and the proportion of upper-medium tobacco is low; the appearance quality of the tobacco leaves shows that the maturity is not enough, the contents of the lower leaves are not sufficient, the leaves are thin, the upper leaves are densely structured, the leaves are thicker, the structure is rough, the color is dark, and the storage fades. Poor elasticity, lack of luster, poor processing resistance; in terms of internal quality, it is manifested in "four highs and four lows", that is, high nicotine content, high chlorine content, high starch content, high miscellaneous gas content; low potassium content, low sugar content, aroma low, low oil content

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