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Soil degradation and prevention in greenhouse production

机译：温室生产中的土壤退化与防治

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摘要

Soil degradation has been a very serious problem for sustainable production, especially by a re-cropping of greenhouse-cultivated cucumber (Cucumis statirus L.). The aim of this research was to expound the actuality for soil degradation, at the same time, put forward some suggestion for preventing from soil degradation and maintain sustainable production in greenhouse basic on the two experiments conducted in a solar greenhouse during 2001-2008 suburb area of Yan'an, Shaanxi province in North China. The result shown that cucumber fruit productivity increased as the increasing of re-cropping years, but decreased after 5years continuously cropping. As increasing of re-cropping years, the population of fungus and bacteria increased, which was assumingly main factor of soil degradation. There was significant difference in cropping models on soil bio-characteristics and system productivity. The productivity were the highest in cropping model between cucumber and greengrocery, cucumber and cowpea (Vigna sinensis L), the second higher were in cropping model between cucumber and maize (Zea mays) for green manure, cucumber and kidney bean (Phaseolus vulgaris). That was the best way to reduce soil bacteria and epiphyte amount to follow lasting three or four months during summer season after cucumber harvest, the better method was planting cowpea or other leguminous crops. Basic on the experiment, the optimums approaches to preventive soil degradation were put forward.
机译：对于可持续生产而言，土壤退化一直是一个非常严重的问题，特别是通过重新种植温室栽培的黄瓜（Cucumis statirus L.）。本研究的目的是阐述土壤退化的现状，同时，基于2001-2008年郊区日光温室的两次试验，提出了防止土壤退化和维持温室可持续生产的一些建议。中国北方的陕西省延安市。结果表明，黄瓜果实产量随复种年限的增加而增加，但连作5年后下降。随着复种年限的增加，真菌和细菌的数量增加，这可能是造成土壤退化的主要因素。种植模式在土壤生物特性和系统生产力方面存在显着差异。黄瓜和蔬菜，黄瓜和cow豆（Vigna sinensis L）之间的生产率最高，黄瓜，玉米（Zea mays）的绿肥，黄瓜和芸豆（Phaseolus vulgaris）的生产率最高。这是减少土壤细菌和附生植物数量的最佳方法，该方法要在黄瓜收获后的夏季持续三四个月，最好的方法是种植cow豆或其他豆科作物。在试验的基础上，提出了防止土壤退化的最佳方法。

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