1. 西南林业大学生态与环境学院,昆明,650224
2. 西南林业大学林学院,昆明,650224
[ "刘晓微(1996—), 女, 硕士研究生, 主要从事坡耕地水土保持研究。E-mail: 1193869893@qq.com" ]
纸质出版:2022
移动端阅览
刘晓微, 赵洋毅, 王克勤, 等. 坡耕地等高反坡阶整地年限对土壤改良和玉米产量的影响[J]. 水土保持学报, 2022,36(1):307-315.
LIU Xiaowei, ZHAO Yangyi, WANG Keqin, et al. Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland[J]. 2022, 36(1): 307-315.
刘晓微, 赵洋毅, 王克勤, 等. 坡耕地等高反坡阶整地年限对土壤改良和玉米产量的影响[J]. 水土保持学报, 2022,36(1):307-315. DOI: 10.13870/j.cnki.stbcxb.2022.01.039.
LIU Xiaowei, ZHAO Yangyi, WANG Keqin, et al. Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland[J]. 2022, 36(1): 307-315. DOI: 10.13870/j.cnki.stbcxb.2022.01.039.
为探究等高反坡阶整地改良红壤坡耕地土壤质量的效果
利用田间定位试验
以滇中昆明松华坝迤者流域坡耕地试验区已实施等高反坡阶整地措施3(CRT 3)
7(CRT 7)
9(CRT 9)年的样地及原状坡耕地(CK)为研究对象
结合各样地玉米产量探明实施年限对土壤结构、肥力和酶活性特征的影响。结果表明: 等高反坡阶整地年限显著改善坡耕地土壤的物理性状
呈现黏粒、粉粒、总团聚体和总孔隙度显著增加
砂粒和容重显著降低; 提高了土壤肥力
其中全氮、全磷、全钾、速效磷、速效钾含量和含水量显著提高; 显著提高土壤酶活性
其中脲酶、淀粉酶、蔗糖酶、磷酸酶、蛋白酶、过氧化氢酶较CK分别提高24.25%~117.43%
20.90%~82.82%
17.09%~99.69%
30.15%~82.63%
32.21%~66.50%和11.67%~41.39%;同时玉米产量得到显著提高
以CRT 9效果最为明显
增产达22.47%。等高反坡阶整地措施可以较好地提高坡耕地土壤肥力
且随整地年限的增加
土壤质量得到改善
有效减缓土地退化。
A field experiment was conducted to study the improvement effect of soil quality in sloping red cultivated land by contour reverse-slope terrace. The small watershed of Yizhe in Songhua Dam in Kunming northern suburb of central Yunnan was selected as a research area in this study
the 3-years (CRT 3)
7-years (CRT 7)
9-years (CRT 9) samples in contour reverse-slope terrace and unaltered sloping farmland (CK) were used as the research objects
combined with corn yield in various samples
the effects of implementing years on soil structure
fertility and enzymes activities were investigated. The results showed that the soil physical properties of sloping farmland were significantly improved by the growing land preparation years of the contour reverse-slope terrace. It appeared that the soil clay
silt
total aggregate and total porosity increased significantly
while the sand content and bulk density decreased significantly. It increased soil fertility
among which the concentrations of total nitrogen
total phosphorus
total potassium
available phosphorus
available potassium and water content were significantly increased
and among which urease
amylase
sucrase
phosphatase
protease and catalase activities were increased by 24.25% ~ 117.43%
20.90% ~ 82.82%
17.09% ~ 99.69%
30.15% ~ 82.63%
32.21% ~ 66.50% and 11.67% ~ 41.39%
respectively. At the same time
corn yield was significantly increased
and CRT 9 had the most obvious effect
which increased by 22.47%. Land preparation measures of contour reverse-slope terrace could improve the soil environment of sloping farmland
and with the increases of land preparation years
soil quality would be better improved
effectively reduced land degradation.
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