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Soil and Water Conservation Effect Study of Different Orchard Interplanting Mode on Red Soil Slope

Author: ZhangHuaMing
Tutor: HeXiaoWu；YangJie
School: Jiangxi Agricultural University,
Course: Utilization of Agricultural Resources
Keywords: Red Soil Slopes Orchard Intercropping patterns Soil and water conservation effect
CLC: S66
Type: Master's thesis
Year: 2011
Downloads: 65
Quote: 0
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Abstract

Jiangxi is our the red soil Centre area, is also typical regional Southern Red Soil Erosion in China. For a long time, with the population growing and irrational reclamation and utilization, the hilly area of ??soil erosion in key areas of the province. With the implementation of Jiangxi Province in 2000, the South Orange North pear fruit industry development strategy, the province's fruit industry has been an unprecedented development. The large-scale orchard development, good economic returns, but hilly soil erosion has also become an important reason for the development of the fruit industry. Orchards is an effective orchard soil and water conservation measures, not only can effectively conserve soil and water, and get some economic benefits. 2001-2006 field positioning observation test data through the orchards of different intercropping patterns on soil physical and chemical properties, the impact of runoff and sediment analysis to determine the effect of different intercropping patterns of soil and water conservation, and based on both ecological and economic benefits principle, the establishment of a comprehensive benefits index system combined effect of the various modes of evaluation to optimize the selection of the orchard configuration mode. Appropriate choice of Orchards measures to improve soil quality, and to provide a scientific basis for prevention and treatment of red soil sloping orchard soil erosion problem by studying the following conclusions: (1) The Orchards can improve soil moisture, which Bahiagrass whole garden coverage and Bermudagrass whole park covered the best in more than 22% of the average soil moisture. Orchards can improve soil bulk density, improve soil capillary water holding capacity, including whole garden interplanting the bermudagrass mode improved the best. (2) the effect of more water storage in the long dry season, Orchards plant transpiration will reduce soil moisture (Bahiagrass Park coverage area than clean tillage reduced 2.54%), early rainfall is relatively abundant Orchards significant (Bahiagrass Park coverage area than clean tillage 4.50%), the impact is much larger than its interplanting plants evapotranspiration role Orchards antecedent rainfall is abundant reservoir effect is more significant, from a certain extent show that the The Orchards effective use of rainwater resources, take the interplanting measures rainwater resources rich southern region has great significance in the orchard. (3) orchard the interplanted can significantly improve soil organic matter and soil total nutrient content. View from improved soil organic matter, interplanted Bermudagrass improved the best interplanted the Bahiagrass improved worst effect. Improved orchard soil total nitrogen effect, interplanted bahia grass, and Bermudagrass orchard mode better than interplanted crop mode, interplanting the worst effects of broadleaf paspalum grass improved; improved orchard soil phosphorus effect, interplanted crop mode significantly better than interplanting different herbage mode. (4) various intercropping patterns could significantly improve soil nitrogen content, which, interplanted interplanting forage crop mode is superior to mode. Interplanting of Bahiagrass and the interplanting crops to improve the orchard soil available phosphorus content interplanting Bermudagrass broadleaf paspalum grass is some reduction in the phosphorus content of the soil available. In addition to the downslope interplanting crops to reduce soil available potassium and other intercropping patterns were significantly improved soil available potassium. (5) improve soil total nitrogen and soil total phosphorus effect Bahiagrass gt; Bermudagrass the gt; broadleaf paspalum grass; to improve soil potassium effectiveness Bahiagrass gt; broadleaf paspalum grass gt; Bermudagrass. Interplanted crop, and downslope interplanted crops cross slope of view, the effect of the cross slope the interplanting improved soil total nitrogen, total phosphorus, total potassium and available N, available P and available K, significantly higher than the downslope interplanted significantly higher than downslope interplanted Description the orchards cross slope interplanted keep the soil nutrients. (6) from the point of view of each cell, different intercropping patterns has good water sediment reduction effect, the set grass classes and the interplanted crop water less sand effect significantly different, the interplanted different grasses, different tillage water less The conservation benefit also different. (7) For less stream sediment reduction effect orchard interplanted significantly better in the ribbon interplanted way, interplanted different herbs and different effects Bahiagrass gt; Bermudagrass gt; broadleaf paspalum grass; sets and grass The classes cover more than 80% less stream sediment reduction efficiency up to 92% or more. (8) Longitudinal interplanted crops are some of the reduction of runoff and sand, but the cross slope interplanted crops to reduce stream sediment reduction effect of more than 20% higher than the downslope interplanting crops mode. Therefore, orchard development in the red soil hilly region should increase interplanting Crossfall. (9) The comprehensive evaluation of the results from the Water Conservation Benefits citrus Bermudagrass most effective, followed by citrus bahia grass and citrus broadleaf paspalum. Configuration mode citrus interplanted crops in different farming methods, comprehensive benefits covered over the whole garden herb, but much higher than the citrus clean tillage mode.

Soil and Water Conservation Effect Study of Different Orchard Interplanting Mode on Red Soil Slope

Abstract

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