Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland

LIU Xiaowei; ZHAO Yangyi; WANG Keqin; MA Caixia; DUAN Xu; ZHANG Yang

doi:10.13870/j.cnki.stbcxb.2022.01.039

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Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland

更新时间：2025-03-12

- Effects of Site Preparation Years of Contour Reverse-slope Terrace on Soil Improvement and Corn Yield in Sloping Farmland
- Vol. 36, Issue 1, Pages: 307-315(2022)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2022.01.039
  CLC： S158.3
- Published：2022
- 稿件说明：
移动端阅览
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：

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.

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。

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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