Fertilizer application method for improving nitrogen utilization rate of tobacco plant

Abstract

The invention provides a fertilizer application method for improving the nitrogen utilization rate of a tobacco plant. According to the present invention, during the fertilizer application, the total nitrogen application amount is 145.0 kg.hm<-2>, the organic-state nitrogen content is 65.0 kg.hm<-2>, the organic-state nitrogen comprises cake fertilizer and pig manure, the inorganic-stage nitrogen content is 80.0 kg.hm<-2>, and the inorganic-stage nitrogen comprises potassium nitrate and a compound fertilizer; by strictly controlling the total nitrogen investment, the organic nitrogen content, the inorganic nitrogen content and the like in the fertilizer application and by reasonably regulating the basal application and the dressing, the influence of different fertilizer application modes (different total nitrogen amount and different nitrogen forms) on the plant nitrogen absorption and utilization is researched, the nitrogen utilization improvement method is researched in the case of no influence on the growth and development of the plant, and the good supporting effect is provided for the prevention of nitrogen excess, waste of cost, nitrogen loss, and the like; and with the fertilizer application method, through the research and the analysis on the traditional fertilizer application (nitrogen application), the method capable of effectively improving the nitrogen utilization rate of the tobacco plant is obtained, 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 the nitrogen utilization rate of tobacco plants. Background technique [0002] Guangdong tobacco production areas are mainly distributed in Shaoguan City in northern Guangdong and Meizhou in eastern Guangdong. Due to the different ecological types of tobacco production areas in Guangdong, the altitude, climate and soil conditions are quite different, and the quality and style of tobacco leaves are also different. Luo Zhanyong et al. (2004) conducted a study on the division of ecological tobacco areas in Guangdong Province and the quality evaluation of tobacco leaves. The results of the study divided Guangdong tobacco production areas into three ecological tobacco areas: Nanxiong, Shixing and Wuhua ecological tobacco areas, Lechang , Ruyuan Ecological Tobacco Area, East Guangdong Ecological Tobacco Area, among which Nanxiong, Shixing and Wuhua E...

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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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