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首页> 外文会议>International Soil Conservation Organization Conference vol.3; 20020526-31; Beijing(CN) >Analysis on the Economic Benefit and Soil Water Conservation by Permeating Irrigation for Hilly Orchards
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Analysis on the Economic Benefit and Soil Water Conservation by Permeating Irrigation for Hilly Orchards

机译：山地果园渗透灌溉的经济效益与水土保持分析。

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There are 271,000 hectares of orchards in the controlled small watershed in hilly areas throughout the Henan Province. In recent years, different forms of irrigation are developed. Experiments and investigations have been carried out in the apple orchards in the west part of Henan Province. It is convinced that permeating irrigation is an effective measure to prevent soil erosion in hilly orchards. It will improve not only the economic benefit of the small watershed control, but also that of the soil-water conservation. To find out its exact functions, we carried out a three-year experimental observation and investigation trying to perfect the small watershed control, ensure its comprehensive benefits. Here's a detailed analysis of the economic benefit and water & soil conservation. Flooding irrigation erodes, on the average, 10.2 m~3 of soil per ha, that means erosion modulus 2,652 t/km~2 a year, if irrigated twice a year, while permeating irrigation will not bring about soil erosion. It will also save water up to 1,650—2,475 t/ha a year, increase water duration 5 more days after the irrigation and decrease soil erosion by 21m~3. Hence, the benefit of water-soil conservation turns out to be remarkable. This way of irrigation costs as much as RMB 6,000 yuan per ha, however, the economic benefit can be as high as RMB 4,830 yuan per ha. Meanwhile, it improves the fruit quality and saves labor. In a word, it is a practical and effective way of irrigation in hilly orchards.
机译：在河南省丘陵地区受控的小流域中，有271,000公顷的果园。近年来，发展了不同形式的灌溉。在河南省西部的苹果园进行了实验和调查。确信渗透灌溉是防止丘陵果园水土流失的有效措施。它不仅可以改善小流域控制的经济效益，而且可以改善水土保持的效益。为了找出其确切功能，我们进行了为期三年的实验观察和调查，试图完善小流域控制，确保其综合效益。以下是对经济效益以及水土保持的详细分析。洪水灌溉平均每公顷土壤侵蚀10.2 m〜3，这意味着如果每年灌溉两次，则每年的侵蚀模量为2652 t / km〜2，而渗透灌溉不会造成土壤侵蚀。每年还可节水1,650-2,475吨/公顷，灌溉后5天再增加水持续时间，减少土壤侵蚀21m〜3。因此，水土保持的好处被证明是显着的。这种灌溉方式的成本高达每公顷6,000元人民币，但经济效益却高达每公顷4,830元人民币。同时，它提高了水果品质并节省了人工。总之，这是丘陵果园灌溉的一种实用有效的方法。

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