文献类型： 外文期刊

作者： Zhang, Bai-Ge ¹ ; Chen, Qiong-Xian ¹ ; Luo, Shao-Bo ¹ ; Zhang, Chang-Yuan ¹ ; Yang, Qiu ¹ ; Liu, Kai-Dong ¹ ;

作者机构： 1.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangzhou 510640, Guangdong, Peoples R China

关键词： Root;Cucumber;NPK Deficiency;Root/shoot ratio

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2012 年 14 卷 1 期

页码：

收录情况： SCI

摘要： A hydroponic culture was carried out to study the effects of N, P, K deficiencies on root traits of cucumber, including root length, root surface area, projected area, average root diameter and biomass. The results showed that compared with control, N and K deficiencies reduced cucumber shoot weight by 17.39 g/plant and 7.31 g/plant, root mass by 5.68 and 7.05 g/plant correspondingly, and decreased all values of root traits. P deficiency lessened 9.72 g/plant shoot weight but increased 0.45 g/plant root weight by raised 71.1% root volume, 31.4% total root length, 44.3% surface area, 48.7% projected area and 8.8% average diameter. The ratio of root/shoot was enhanced by 101.8% in N deficiency and 74.1% in P deficiency, but reduced by 33.3% in K treatment. It reveals a potential of shaping root system by deficient nutrient application. (C) 2012 Friends Science Publishers