无土栽培西葫芦营养液性质变化研究  

Study on Nature Change of Nutrient Solution in Pumpkin Soilless Culture

作　　者：李孝良[1] 常江[2] 吴俊超 

机构地区：[1]安徽技术师范学院植物科学学院,安徽凤阳233100 [2]安徽农业大学资环学院,安徽合肥230036 [3]安徽凤阳板桥农技站,安徽凤阳233100

出　　处：《安徽技术师范学院学报》2005年第2期11-14,共4页Journal of Anhui Agrotechnical Teachers College

基　　金：安徽省教育厅自然科学研究项目(2003kj070);安徽技术师范学院自然科学项目(2003010)

摘　　要：采用营养液栽培模式比较了几种营养液配方在无土栽培西葫芦过程中营养液性质的变化,结果表明:在栽培过程中营养液的性质有较大变化。无土栽培西葫芦各处理营养液的pH值在一日内均表现出明显的上升趋势,由pH6. 5上升至pH7. 2以上;营养液的溶解氧显著降低,一日内迅速由6mg/L降至4mg/L以下;营养液的EC值在一个营养周期内表现出明显的降低趋势。营养液的EC值与营养液中NO3- -N、P、K的含量呈极显著直线正相关。By soilless culture pattern we compared the changes of nutrient solution nature in hydroponics pumpkin, the results of study are as follows: There are greater changes in the nature of the nutrient solution in the course of culture. The pH value of nutrient solution increased obviously in one day, rising from pH6.5 to above pH7.2; Dissolving oxygen of nutrient solution reduce notably, dropping from 6mg/L to less than 4mg/L rapidly in one day; The EC value decreased evidently within a nutrition cycle.There is significant linear positive correlation between the EC value and the content of NO 3 --N, P, K in the nutrient solution.

关 键 词：无土栽培 西葫芦 营养液性质变化 

分 类 号：S642.6[农业科学—蔬菜学]