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[1]LI Haiqiang,GUO Chengjiu,LI Yong,et al.Effects of Hedgerows on Soil Nutrient Losses on the Sloping Farmlands[J].Research of Soil and Water Conservation,2016,23(05):42-48.

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Effects of Hedgerows on Soil Nutrient Losses on the Sloping Farmlands

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 05 Page number: 42-48 Column: Public date: 2016-10-28

Title:: Effects of Hedgerows on Soil Nutrient Losses on the Sloping Farmlands

Author(s):: LI Haiqiang¹, GUO Chengjiu¹, LI Yong², SHEN Yitong¹; 1. College of Water Conservancy, Shenyang Agricultural University, Shenyang 110866, China;
2. Soil and Water Conservation Station of Huanren Manchu Autonomous County, Liaoning 117200, China

Keywords:: hedgerow; available phosphorus; organic matter; soil depth; sample sequence

CLC:: S152.7;S157.1

DOI:: -

Abstract:: Hedgerow can effectively control soil erosion and reduce soil nutrient losses, so it has been widely used. However, there was little research for how hedgerow affects soil fertility of slope farmland with shorter slope length. By setting 0.8 m, 1.0 m, 1.2 m three width, the simple sites between hedgerows, the top sample sites of hedgerow, the middle sample sites of hedgerow, the bottom sample sites of hedgerow and 0—15 cm layer and 15—30 cm layer, we examined how the alfalfa affected the soil nutrient in the natural slope with 24 m long. The result shows that there is a relationship among the hedgerow width and soil organic matter and available phosphorus. The uphill position arranges wider hedgerow to produce better effect that the soil available phosphorus can be distributed uniformly on the slope. The contents of soil organic matter and available phosphorus are more and more richer in the top sample sites of hedgerow, but the erosion is severe in the simple sites between hedgerows and the simple sites of bottom hedgerows and soil nutrient appears horizontal distribution. With hedgerow affecting, soil organic matter and available phosphorus changes are great in the 0—15 cm layer, however, soil organic matter and available phosphorus in 15—30 cm layer become less in the middle sample sites of hedgerow. Hedgerow can change micro topography of the slope, and contents of soil organic matter and available phosphorus in the 0—15 cm layer are more and more richer in the top sample sites of hedgerow and are the highest, while content of hedgerow are highest in the 15—30 cm layer the middle sample sites. The soil organic matter showed a high degree of loss in the slope, and the available phosphorus is highly concentrated. Therefore, planting grass hedgerow should consider suitable width, and select the appropriate plant species. And people should strengthen hedgerow belt soil management and protection, take soil nutrient loss of the bottom of hedgerows into account, so as to improve the overall land productivity.

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