Soil Degradation and Rehabilitation in Cucumber (Cucumisstatirus L) Continuous Cropping System in Greenhouse onLoess Plateau in China

摘要

As the development of specialized production of vegetable in solar green house, theproblem of continuous cropping obstacle has been occurre, for example, the degradation of soilenvironment, serious plant diseases and fall of yield, which intimidated facility vegetables sustainableproduction. In order to determine the soil degradation process, and make suggestion for soilrehabilitation in continuous cropping system on Loess Plateau in China. The field experiments wereconducted in solar greenhouse during 2001-2003 in Yanan, North Shaanxi province in China(located in the typical hill-gullied region of the Loess Plateau, Longitude E109°19'23", Latitude N36° 51'30", with an elevation of 1010m-1431m). Graft cucumbers, the squash root in stead ofcucumber root, were planted on 6 of November 2001, and 26 of October 2002. The soil moisturemaintained as relative soil water content 80%-90% with drip irrigation system. The results showedthat as continuous cropping years increasing, the cucumber fruit productivity increased, but after 4