番茄无机基质育苗灌溉指标的研究  

Studies on the Irrigation Quota of Raising Tomato Seedling with Inorganic Substrates

作　　者：孙守如[1] 陈艳丽[2] 王吉庆[1] 高新生[3] 路玲[1] 

机构地区：[1]河南农业大学林学园艺学院,郑州450002 [2]华南热带农业大学园艺学院,海南儋州571737 [3]中国热带农业科学院橡胶研究所,海南儋州571737

出　　处：《河南科学》2007年第3期427-431,共5页Henan Science

基　　金：国家科技部成果转化基金项目(2003410010411)

摘　　要：以草炭∶蛭石=2∶1,含水量85%的灌溉下限的复合基质为对照,研究无机基质:蛭石∶珍珠岩=2∶1,以含水量65%,75%,85%为不同灌溉下限时对番茄幼苗生长的影响,结果表明,在夏季,选用无机基质育苗,采用75%的相对含水量作为灌溉下限,经23 d可培育出适龄健壮的番茄幼苗,较复合基质育苗节省投资25.9%.75%灌溉下限处理的幼苗在播后23 d根干重开始下降,全株干重增速缓慢,可作为适宜苗龄,每穴盘每天平均灌水量与单株叶面积呈显著相关,其回归方程为:Y=293.13+2.79X,r=0.760>r(0.05)=0.754.The experiment was conducted to study the effect of three irrigation floor levels of 65 %、75 %、85 % （Which represent the lowest relative water capacity of pure inorganic substrates） on the quality of tomato seedlings. In this experiment, The compound substrates （peat/Vermiculite=2：1）with the irrigation floon level of 85 % as the control. Was we considered the results showed that the strong tomato seedlings with suitable seedling age 23 days can be obtained in summer. When seedling with the relative water capacity of 75 % as the irrigation floor level, and 25.9 % of investment can be saved comparing with the contrast With the compound substrates in summer; When 75 % as the irrigation floon level is used and when the seedling age is 23 days, the relative increasing tendency of the dry root weight begin to descend. The dry weight of the total seedling begins to grow slowly. So we can consider 23 days as the suitable tomato seedling age in summer. The irrigation capacity per plant, per day is significant correlated to the leaf area per plant. We can get the regression equation： Y=293.19＋2.79X, r=0.76〉r（0.05）=0.754.

关 键 词：番茄育苗 无机基质 灌溉指标 

分 类 号：S63[农业科学—蔬菜学]