摘要
以长武北部黄土高原沟壑区为代表,研究了不同果园种植年限下的土壤质量现状,运用偏相关系数法确定权重,结合隶属度函数评价了该地区土壤的综合肥力水平,分析果树种植中土壤质量随着种植年限的变化趋势,结果表明:黄土沟壑区果园土壤IFI值在0.22～0.70,其中有27%达到了2级土壤质量标准,64%达到了3级土壤质量标准,9%达到了4级土壤质量标准。随着果树种植年限的增加,在0～20cm耕层,达到2级土壤质量标准的比例大小顺序是5～15年(44%)>5年以下果园(37.5%)=15年以上果园(37.5%),以5～15年果园的土壤质量相对较好,果园0～20cm土层的土壤质量优于20～40cm土层的土壤质量。
As the representative of the northern Loess Plateau gully region, the soil quality under different cultivation length of the orchard in Changwu county was studied. Using partial correlation coefficient to determine the weight,combined with evaluation of membership function to evaluate soil quality levels of the area, the trend of orchard soil quality under different cultivation years was analyzed. The results showed that the IFI values of orchard soil were between 0.22 and 0.70,27% of them reached the second soil quality standards,64% reached a third-level soil quality standards ,9% met the fourth standards of soil quality. With the increase of orchard cultivation by years ,in the 0-20cm topsoil,the order of the ratio to meet the secondary standard of soil quality was 5-15 years orchard （44%）〉5 years orchard（37.5%）=over 15 years orchard（37.5%）.The soil quality of 5-15 years orchard was relatively good,and the orchard soil quality ofsurface（0-20cm）was better than that of the 20-40cm layer.
出处
《现代农业科技》
2009年第21期212-214,216,共4页
Modern Agricultural Science and Technology
基金
中国科学院知识创新工程重大项目(KSCX1-YW-07)
关键词
果园
土壤质量现状
评价
黄土高原沟壑区
orchards
soil quality status
assessment
Loess Plateau gully region
