植物营养与肥料学报2016,22(3)：855-862 Jourmal of Plant Nutrition and Fertilizer
doi: 10. 11674/zwyf. 14447 http: //www. plantnutrifert. org
-聚谷氨酸对番茄穴盘育苗基质矿质养分供应
及幼苗生长发育的影响
褚群，董春娟，尚庆茂·
（农业部园艺作物生物学与种质创制重点实验室，中国农业科学院蔬菜花卉研究所，北京100081）
摘要：【目的】研究聚谷氨酸不同加人量对基质理化性状和覆菜生长的影响，可以为其在番茄穴盘育苗中的合理应
用提供依据。【方法】以草炭、蛭石
载裁试验谷氨酸后16d，菱为20
者费高了型通气升原度
提高了番蔬穴盘加量者量用，
步增加趋势，根系括力茎叶都表现品
、珍珠岩(3：
1准合物
首基质，50孔塑料穴盘为育苗容器进行盆
10kg/m，调查了添加-案施适宜用量试验：在播科顶部灌施，肥料氮（N）浓 1)基质添加y-聚谷氨酸显性镁含量和EC值，降低了
英性镁供应能力，显著
A添加量的增加
番瓶苗叶片叶绿系含量星速
无论基质添加或项部灌施，对番茄穴盘苗
聚谷氨酸对番茄穴盘苗生长
发育的促进作用还表现出明显的延迟效应，在幼苗生长发育后期的效果显著优于前期。【结论】番茄穴盘育苗施用
-聚谷氨酸能增强基质水分、养分供应能力，促进番茄穴盘苗后期生长发育。关键调：番茄；穴盘苗；聚谷氨酸
中图分类号：S625.5；S642.2
文献标识码：A
文章编号：1008505X(2016)03085508
Effects of -polyglutamic acid on substratemineral nutrient supplyand
growth of tomato plug seedlings CHU Qun, DONG Chun-juan, SHANG Qing-mao
(Key Laboratory ofBiology and Genetic Improtement of Horticultural Crops，Ministry of Agriculture; Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Bejing 10008], China)
Abstract: [Objectives】 The objective is to evaluate effects of -poly-glutamic acid (-PGA) on tomato plug seedling production. [Methods] Tomato seedlings were grown in the 50 cell-plug trays, with substrates containing peat moss, vermiculite and perlite(3 : 1 : 1,v/v) as the growth medium, -PGA was applied in the substrates by mixing with substrate before the sowing. Changes in physical, chemical and biological properties of the substrates and growth parameters of tomato plug seedlings caused by -PGA addition were measured, y-PGA was applied by overhead irrigation 16 days after the sowing.The growth parameters of tomato plug seedlings were measured.[Results] In the beginning of the treatment, y-PGA improves the water flled porosity, water holding capacity, EC value, and the contents of NH,; -N, NO, -N, Olsen-P, readily available K, exchangeable Mg in the substrates, and reduces the pH values. At the seedling growth stage, -PGA increases the available N, P, K and Mg contents in the substrate, and especially improves the activities of phosphatase and catalase at the later growth stage. For the tomato seedlings, the chlorophyll contents are increased with the increasing of y-PGA. The highest root activity is obtained in the treatment of 3 kg/m-PGA. -PGA mainly improves the shoot growth but restrains the root growth
收稿日期：2014-924
接受日期：2015-1-27
网络出版日期：2015-07-24
基金项目：国家自然科学基金项目(31172001)；现代农业产业技术体系建设专项资金（CARS-25）；公益性行业（农业）科研专项经费项目
(201303014）资助。
作者简介：褚群（1982一），女，山东潍坊人，博士，主要从事蔬菜苗期发育生理及分子生物学研究。E-mail；chuqunl11@163.com
·通信作者E-mail；shangqingmao@caas.cn
万方数据