Fertilizing method for improving tobacco plant dry matter accumulation

Abstract

The invention provides a fertilizing method for improving tobacco plant dry matter accumulation. The fertilizing method includes that during fertilizing, total nitrogen fertilizing amount is 167.0kg-hm-2, wherein organic-state nitrogen amount is 65.0kg-hm-2, organic-state nitrogen comprises cake fertilizer and pig manure, and inorganic-state nitrogen is 102.0kg-hm-2 and comprises potassium nitrate and compound fertilizer. By strictly controlling input of total amount of nitrogen and organic nitrogen and inorganic nitrogen during fertilizing and reasonably regulating basal application and top dressing, influence of different fertilizing modes (input of total amount and form of nitrogen failing to pass) on plant nitrogen absorption and utilization is studied, dry matter accumulation of tobacco plants is improved, growing quality of plants is guaranteed, and the fertilizing method is scientific and feasible and can be popularized.

Description

technical field [0001] The invention relates to the field of tobacco planting, in particular to a fertilization method for improving dry matter accumulation of tobacco plants. Background technique [0002] The tobacco leaf producing areas in Guangdong are mainly distributed in Shaoguan City in northern Guangdong and Meizhou City in eastern Guangdong. Due to the different ecological types, altitude, climate and soil conditions of each tobacco leaf producing area in Guangdong, the quality and style of tobacco leaves are also different. Luo Zhanyong et al. (2004) studied the division of ecological tobacco areas in Guangdong Province and the quality evaluation of tobacco leaves. The results of the study divided Guangdong tobacco leaf production areas into three ecological tobacco areas: Nanxiong, Shixing and Wuhua ecological tobacco areas, Lechang , Ruyuan ecological tobacco area, and eastern Guangdong ecological tobacco area. Among them, the tobacco leaf flavor types in Nanxion...

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Problems solved by technology

[0003] In view of the current Nanxiong tobacco area, due to soil degradation and extensive cultivation management, etc., the root system of field tobacco plants is underdeveloped, field tobacco plants are stunted, the tobacco leaves are poor in field ripening resistance, and the maturity of harvesting is not enough, which is finally reflected in the quality and style of tobacco leaves To solve the problem, the traditional tobacco planting methods need to be adjusted. The effect of fertilizer inorganicization on accelerating the soil degradation of tobacco planting in Guangdong, and the mineralization of organic matter will cause a huge amount of nitrogen loss. In production, organic fertilizers are used to supplement soil nitrogen sources, while reducing Inorganic fertilizer nitrogen input should be the method to fundamentally improve the nitrogen fertilization efficiency of flue-cured tobacco

The crux of the problem is whether the nitrogen demand of flue-cured tobacco can be fully met under the condition of reducing the nitrogen input of inorganic fertilizers. At the same time, considering the cost of fertilization, in the adjustment of fertilization methods, there is a treatment that the nitrogen fertilization method is reduced when the nitrogen of inorganic fertilizers is lower than that of traditional fertilization. Considering that this fertilization technology does not apply nitrogen in the middle and late stages, it may have a certain negative impact on the internal chemical quality of flue-cured tobacco, the sensory quality of flue-cured tobacco and the display of Luzhou-flavored style

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