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通过野外调查,实地测点以及土壤采样分析,以开都河流域下游绿洲为研究区,利用SPSS与DPS等软件对盐分与土壤质地进行ANOVA和多重比较分析。研究结果表明:(1)土壤是以粉粒为主的质地组成。粉粒百分含量分别为0~10 cm层62.65%,10~30 cm层60.31%,30~50 cm层55.93%;0~10 cm、10~30 cm与30~50 cm表层土壤中盐分离子的均值呈现SO42->CL->Mg2+>Ca2+。(2)四种土地利用类型各粒级机械组成变异系数范围分别为林地8%~62%、耕地4%~37%、园地2%~40%、未利用地15%~52%。变异系数较高;四种土地利用类型总盐的均值从高到低依次为未利用地、耕地、园地和林地。(3)不同土地利用类型粉粒差异明显,均达到显著性水平(P<0.05)。(4)土壤粘粒与HCO3-、Cl-、SO42-呈显著性相关(P<0.05);粉粒与HCO3-离子含量呈极显著相关(P<0.01)。
Through the field survey, site survey and soil sampling analysis, taking the oasis in the lower reaches of the Kaidu River basin as the research area, the salt and soil texture were analyzed by ANOVA and multiple comparisons using software such as SPSS and DPS. The results show that: (1) The soil is composed of grain-dominated texture. The percentage of powdery grains were 62.65% in 0 ~ 10 cm layer, 60.31% in 10 ~ 30 cm layer and 55.93% in 30 ~ 50 cm layer, respectively. The contents of salt ions in topsoil of 0 ~ 10 cm, 10 ~ 30 cm and 30 ~ The mean of SO42-> CL-> Mg2 +> Ca2 + appears. (2) The coefficients of variation of the mechanical composition of the four land use types are 8% -62% of the forestland, 4% -37% of the arable land, 2% -40% of the garden and 15% -52% of the unused land. The coefficient of variation was high. The average value of total salt of the four types of land use was unused land, cultivated land, garden land and forest land from high to low. (3) There were significant differences among the different land use types of silt, reaching significant levels (P <0.05). (4) There was a significant correlation between soil clay and HCO3-, Cl- and SO42- (P <0.05). The content of HCO3- and the grain were highly correlated (P <0.01).