| The study was about red soil slopeland surface soil resources in Poyang Lake Basin condition investigation, and in order to investigate on red soil slopeland surface soil resources in Poyang Lake Basin fertility and soil resistance to erosion conditions, analyzing the surface soil quality, crop growth, and corrosion resistance of soil among the quantitative relations. In order to protect and improve land productivity, accelerate Shan Qiu District new rural construction providing strong technical support, and to realize the agricultural modernization to achieve "win-win" economic development and ecological protection. This paper was mainly based on the corrosion resistance of surface soil fertility status and soil resources condition, and jinxian, gaoan and hukou was the research objects. This paper discussed the surface soil resources of soil organic matter, total N, total P, total K, alkaline hydrolysis N, available P, available K, and CEC and soil erosion resistance index on the spatial variation situation, and analyzed the influence of variation restrictive factor. And at the same time, the water and soil conservation ecological science and technology park of jiangxi province was regarded the research object, and did the peanut plants experiment. Through 0cm, 10 cm, 20 cm, 30 cm, 40 cm five different soil thickness to do a research among the surface soil quality, crop growth, and corrosion resistance of soil relationships. With the combination of the revised nemoro formula index, we commented fertility of soil. And we adopted the Principal component analysis to assure corrosion resistance of soil composite index. The results of research as follows:(1)on red soil slope surface soil resources in poyang Lake Basin nutrient distribution characteristics and the soil fertility quality evaluationBy mei luo comprehensive evaluation model to evaluate the soil fertility in three experimental area slope surface soil fertility quality, the results show that the surface soil fertility quality composite index from high to low respectively jinxian county > gaoan county > hukou county. Compared with the same slope, jinxian county, hukou county farmland soil fertility quality of composite index has increased, increased by 14.38% and 6.39%, respectively, while gaoan quality comprehensive quality index of soil fertility was reduced by 6.04%.(2)The corrosion resistance of soil on red soil slope surface soil resources in poyang Lake BasinThrough principal component analysis slope surface soil erosion resistance index from high to low respectively jinxian county > gaoao county > hukou county. Relatively undisturbed slope in jinxian county, gaoan, hukou county of slope surface against corrosion index decreased proportion were 1.14%, 13.58% and 13.04%, respectively.(3)The red soil slope to the influence of different surface soil thickness of land productivity researchOverburden thickness of backfill in 0~40 cm range, according to the revision of the plum, comprehensive evaluation model to evaluate the treatment of soil fertility, with the increase of surface soil backfilling thickness, soil comprehensive quality index increased gradually, from big to small in turn to 40 cm, 30 cm, 20 cm, 10 cm, 0 cm processing. At the same time, there were no significant difference on 30 cm treatment with 40. At the same time by the principal component analysis result, 30 cm processing the strongest resistance to corrosion, soil corrosion resistance composite index from big to small in turn for 30 cm, 40 cm, 20 cm, 10 cm, 0 cm.Surface soil backfill thickness within 0~40 cm, 40 cm treatment is beneficial to increase the peanut plant height, dry weight and biomass accumulation of the dry weight of the production, but there is no significant difference between 30 cm treatment with 40 cm. Through sigmaplot on corrosion resistance of soil fertility, soil quality and crop growth in the relationship among three dimensional analysis form a Z=65.25*exp(-0.5*(((x-5.20)/3.24)2+((y-1.26)/2.48)2)). binary quadratic exponential equation of curved surface. |
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