【摘要】 采用大棚试验和室内分析相结合的方法,分别对位于黄土高原上的庆阳市周边地区不同年限连作黄瓜大棚土壤的主要养分含量状况、水稳性团粒结构及盐积状况进行调查分析。结果表明,随着连作年限的增加,土壤主要养分含量有增加的趋势;2~0.25 mm水稳性团粒增加,土壤物理性能有所改善;盐分积累,土壤化学性质变劣。更多还原

【Abstract】 The main nutrition contents,qualification of aqueous steady globs and salt accumulation of continuous cropping cucumber in plastic greenhouse in Longdong area on loess plateau were investigated.The results showed that as the years continuous,the amount of main soil nutrients and 2～0.25 mm aqueous steady globs increased,and the soil property of physical structure was improved.However,the chemical property of soil became worse and the salt was accumulated.更多还原