IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitlePreliminary Study on Determination of the Fertilization Tolerance of the Purple Soil
Thesis Advisor刘刚才
Degree Grantor中国科学院研究生院
Place of Conferral北京
Degree Name博士
Degree Discipline自然地理学
Keyword紫色土 容许 施肥量 确定 研究
Other AbstractWe analyzed the following three aspects impact of fertilization: Properties and physiological characteristics of crop, the physic-chemical properties of soil, the characteristics of potential eutrophication hazards of nitrogen and phosphorus losses from the fertilized slope Land. The methods of principal component analysis and the inversion were used to determine the effects of the soil fertility and the potential eutrophication hazards of nitrogen and phosphorus losses from the fertilized slope Land with different amount of fertilization. The results show that when the amount of fertilization was 0.60~1.12t/hm2(N-P2O5-K2O=0.102-0.102-0.102~0.190-0.190-0.190t/hm2), it can protect maize leaves from glare reflected by sunshine, and reach their full potential of chlorophyll photosynthesis and ensure the normal growth of maize. The larger leaf area index, the higher plant height and yield were observed, and the best performances of the most bacteria number, the strongest ability of water reservation, and highest fertility was made under the amount of fertilization. the mount of fertilizer was0.60~1.12t/hm2(N-P2O5-K2O=0.102-0.102-0.102~0.190-0.190-0.190t/hm2)could also ensure the water will not cause water eutrophication caused by the nitrogen and phosphorus in runoff. Based on reveal the relationships between different fertilization and crop yield, soil fertility as well as water environment to define the concept of the tolerant fertilization with plot and region scale with according to the concept and the study of ecological fertilizer at home and abroad. Using the method of integrated optimization index to determine the range of fertilization tolerance is 0.60~1.12t/hm2(N-P2O5-K2O =0.102-0.102-0.102~0.190-0.190-0.190t/hm2) preliminarily.
Document Type学位论文
Recommended Citation
GB/T 7714
赵丽. 紫色土容许施肥量的初步确定研究[D]. 北京. 中国科学院研究生院,2013.
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