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[1]AN Tongxin,ZHOU Feng,WU Zhenzhen,et al.Effect of Crop Intercropping on Soil and Water Conservation in Arable Sloping Land[J].Research of Soil and Water Conservation,2019,26(02):17-22.

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Effect of Crop Intercropping on Soil and Water Conservation in Arable Sloping Land

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 02 Page number: 17-22 Column: Public date: 2019-04-28

Title:: Effect of Crop Intercropping on Soil and Water Conservation in Arable Sloping Land

Author(s):: AN Tongxin¹, ZHOU Feng¹, WU Zhenzhen², HE Chengshan³, LI Kang⁴, YANG Youqiong¹, WU Bozhi¹; 1. Faculty of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China;
2. Institute of Agricultural Science of Xishuangbanna, Jinghong, Yunnan 666100, China;
3. Seed Management Station of Deqin County in Diqing Prefecture, Deqin, Yunnan 674500, China;
4. Agricultural Broadcasting and Television School of Mojiang County in Puer City, Mojiang, Yunnan 654800, China

Keywords:: maize; grass strip; green pepper; intercropping; soil erosion; sloping land

CLC:: S344.2;S157

DOI:: -

Abstract:: Because of the unreasonable cultivation techniques and measures in the ecological system of sloping land in hill, there is inefficient utilization and protection of natural resources such as water and soil in Yunnan Province. Use of the measures of soil and water conservation with different crops and varieties intercropping can provide reasonable and feasible crop protective planting measures for soil and water losses on sloping land. Maize, green pepper and grass strip were selected to form different intercropping patterns (maize and green pepper intercropping, maize and grass strip intercropping, green pepper and grass strip intercropping, in which the row ratio is 2:2, 2:4, 2:6, respectively) in order to analyze the effects of different intercropping system on soil erosion in slope land. Soil erosion of intercropping system was lower than monoculture system. The total runoff of maize and grass strip intercropping was 97.52% lower than maize monoculture, total soil erosion of maize and grass strip intercropping was 99.49% lower than green pepper monoculture, the efficiency of soil and water conservation of 2 rows of maize intercropping with 2 rows of green pepper and 2 rows of maize intercropping with 4 rows of green pepper were better than 2 rows of maize intercropping with 6 rows 0f green pepper in maize and green pepper intercropping system. Soil and water conservation benefit of intercropping system was more significant with the increase of rainfall intensity. Runoff and soil erosion of maize and grass strip intercropping and green pepper intercropping with grass strip were significantly lower than those of the green pepper monoculture and maize monoculture (p<0.05). In the condition of high intensity rainfall, runoff and soil erosion of maize intercropping with grass strip were 98.25% and 99.96% lower than maize monoculture. So, maize intercropping with grass strips and pepper are effective to reduce the soil erosion on sloping land. Under the high intensity of rainfall, the measures of intercropping are more useful for sustainable use and protection of the soil and water resources on mountainous arable slopping land.

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