| 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 |
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| 引用本文： | 刘晓微,赵洋毅,王克勤,马彩霞,段旭,张洋.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. |
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| 作者姓名： | 刘晓微 赵洋毅 王克勤 马彩霞 段旭 张洋 |
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| 作者单位： | 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 |
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| 基金项目： | 云南省基础研究计划项目(202001AT070136);国家自然科学基金项目(42067005);云南省万人计划青年拔尖人才项目(YNWR-QNBJ-2019-215, YNWR-QNBJ-2019-226);国家林草局林业科技创新平台运行补助项目(2020132078, 2020132550) |
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| 摘 要： | 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...
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| 关 键 词： | 等高反坡阶 坡耕地 土壤改良 理化性质 土壤酶活性 |
| 收稿时间： | 2021/7/8 0:00:00 |
Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland |
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| LIU Xiaowei,ZHAO Yangyi,WANG Keqin,MA Caixi,DUAN Xu,ZHANG Yang.Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland[J].Journal of Soil and Water Conservation,2022,36(1):307-315. |
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| Authors: | LIU Xiaowei ZHAO Yangyi WANG Keqin MA Caixi DUAN Xu ZHANG Yang |
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| Institution: | 1. College of Ecology and Environment, Southwest Forestry University, Kunming 650224;2. College of Forestry, Southwest Forestry University, Kunming 650224 |
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| Abstract: | 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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| Keywords: | contour reverse-slope terrace slope farmland soil improvement soil physical and chemical properties soil enzyme activity |
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