干旱地区农业研究2016，Vol.34Issue(5)：205-209,5.DOI:10.7606/j.issn.1000-7601.2016.05.31
渭河上游地区温室菜地土壤肥力演变特征研究
Study on greenhouse soil fertility characteristics of Weihe River upstream
摘要
Abstract
The effects of long-term continuous cropping greenhouse vegetables on soil pH ,total salt ,organic mat-ter ,and N ,P and K nutrients content of topsoil (0 ~ 20 cm) were studied through open field and greenhouse topsoil sampling during different cropping years in Wushan county Tianshui city located upstream of Weihe River .The results showed that pH of topsoil (0 ~ 20 cm) in greenhouse vegetable field during different cultivation years was all significantly lower than that of the open field ,and with the extension of cultivation years ,soil pH become declined significantly . Moreover ,soil pH was significantly negatively related with cultivation years ,0 .05 pH decline per year .In contrast ,the soil total salt content was significantly positively related to cultivation years with 0 .091% increase per year .For 14 years continuous cropping with greenhouse vegetables ,soil total salt content reached to 0 .34% ,6 .35 times as much as that in the open field .Soil organic matter ,total nitrogen ,available nitrogen ,total phosphorus ,total potassium ,available phos-phorus and available potassium contents were also gradually increased with the increase of cultivation years .After 14 years of continuous cropping with greenhouse vegetables ,soil available N ,available P and available K contents reached to 230 .17 ,342 .17 mg·kg - 1and 263 .00 mg·kg - 1 ,respectively ,significantly higher than those in the open field .关键词
渭河上游/温室菜地/土壤肥力Key words
Weihe River upstream/greenhouse vegetable/soil fertility分类
农业科技引用本文复制引用
俄胜哲,黄涛,王亚男,曾希柏,袁金华,车宗贤,郭永杰..渭河上游地区温室菜地土壤肥力演变特征研究[J].干旱地区农业研究,2016,34(5):205-209,5.基金项目
国家科技支撑计划课题 （）
