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EFFECTS OF FERTILIZATION ON PLANT-SOIL ECOLOGICAL STOICHIOMETRIC CHARACTERISTICS OF DEGRADED ARTIFICIAL GRASSLAND IN KARST AREA

文献类型： 外文期刊

作者： Chi, Yongkuan 1 ; Song, Shuzhen 3 ; Zhao, Degang 1 ; Wu, Jiahai 1 ;

作者机构： 1.Guizhou Inst Anim Husb & Vet Med, Guizhou Acad Agr Sci, Postdoctoral Workstn, Guiyang 550002, Peoples R China

2.Guizhou Univ, Coll Life Sci, Postdoctoral Res Stn, Guiyang 550025, Peoples R China

3.Guizhou Normal Univ, Sch Karst Sci, Guiyang 550001, Peoples R China

关键词： Grassland; Plant-soil; Ecological stoichiometry; Karst; Rocky desertification

期刊名称：FRESENIUS ENVIRONMENTAL BULLETIN （ 影响因子：0.618； 五年影响因子：0.583 ）

ISSN： 1018-4619

年卷期： 2022 年 31 卷 10 期

页码：

收录情况： SCI

摘要： Artificial grassland is an important basis for the development of animal husbandry, and has irreplaceable ecological, social and economic functions for human well-being, but at the same time, artificial grassland is prone to degradation, which seriously affects the normal performance of its functions. To this end, in a typical karst rocky desertification ecological restoration area in Guizhou, China, we set different fertilization ratios, mowed three stalks, and observed the ecological stoichiometric characteristics of E. The results showed that with the increase of the number of stubble cutting, the contents of C and N in the four treatments showed a decreasing trend, while P was not significant; different stubble cutting numbers would cause the stoichiometry of plants and soil There are large differences in characteristics; fertilization can change the growth-limiting elements of forage grass in the soil. We suggest that in the future, precise fertilization should be carried out according to the cutting time, and the research on the ecological stoichiometric characteristics of long-term forage growth cycles should be strengthened.

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