解磷菌剂对海滨盐土有效磷含量及耐盐油料植物生长的影响

生态学杂志 ›› 2009, Vol. 28 ›› Issue (09): 1835-1841.

解磷菌剂对海滨盐土有效磷含量及耐盐油料植物生长的影响

秦超琦¹;吴向华^1,2;郑琨¹;钦佩^1**

¹南京大学盐生植物实验室|南京 210093；²南京晓庄学院生命科学系|南京 210017

出版日期:2009-09-10 发布日期:2009-09-10

Effects of phosphatesolubilizing fungi on costal saline soil available phosphorous content and salttolerant oil plant growth.

QIN Chao-qi¹;WU Xiang-hua^1,2;ZHENG Kun-¹;QIN Pei¹

¹Halophyte Research Laboratory, Nanjing University, Nanjing 210093, China|²Department of Life Sciences, Nanjing Xiaozhuang College, Nanjing 210017, China

Online:2009-09-10 Published:2009-09-10

摘要/Abstract

摘要： 利用菌根真菌（AM菌）和本实验室在互花米草群落盐土中发现的一种特有优势真菌毛霉(Mortierella sp.)研制的解磷菌剂，以海滨盐土为基质进行盆栽试验，研究了菌剂对海滨盐土的有效磷含量的影响。结果表明：混合施用AM菌剂和毛霉菌剂后，蓖麻的株高、茎粗、鲜质量、干质量以及叶片叶绿素含量，较对照（CK）分别增加了110.0%、48.8%、85.9%、112.0%和67.6%，土壤有效磷含量较CK增加了52.9%，与CK间差异均达极显著水平，同时显著高于单施2种解磷菌剂的处理，单施2种解磷菌剂的处理间无显著性差异；海滨锦葵的株高、茎粗、鲜质量、干质量以及叶片叶绿素含量，较CK分别增加了45.4%、85.5%、200.0%、157.0%和83.4%，土壤有效磷含量较CK增加了89.0%，与CK相比差异达极显著水平，显著高于单施菌剂的处理，而单施毛霉菌剂后土壤有效磷显著高于单施AM菌剂；2种解磷菌剂在促进蓖麻和海滨锦葵生长的同时，有提高海滨盐土有效磷含量的作用，而且2种菌剂混合施用效果最佳，对于提高中国盐土磷资源利用率以及促进盐土农业生产的持续发展具有重要实践意义。

关键词: 水分环境, 空间格局, GIS, 黄土高原

Abstract: With arbuscular mycorrhizal (AM) fungi and the dominant fungus Mortierella sp. from Spartina alterniflora salt marsh soil as phosphate-solubilizing agents, a pot experiment was conducted to study their effects on the available phosphorous (P) content of a costal saline soil and the growth of -Ricinus communis and Kosteletzkya virginica, aimed to provide guidance for the cultivation of salt-tolerant oil plants on costal saline soil. After the combined application of AM fungi and Mortierellasp. agents, the available P content in the soils planted with R. communis and K. virginica increased by 52.9% and 89.0%, respectively, and the plant height, stem diameter, plant fresh weight and dry weight, and leaf chlorophyll content of R. communis and K. virginica increased by 110.0% and 45.4%, 48.8% and 85.5%, 85.9% and 200.0%, 112.0% and 157.0%, and 67.6% and 83.4%, respectively, being significantly higher than the control. Single application of AM fungi or Mortierella sp. also increased the soil available P content and promoted the growth of R. communis and K. virginica, but the effect was lesser than the combined application. For the soil planted with R. communis, no significant difference was observed in applying AM fungi or Mortierella sp.; while for the soil planted with K. virginica, the effect of applying Mortierella sp. in increasing soil available P was significantly higher than that of AM fungi. All the results suggested that both AM fungi and Mortierella sp. could increase the available P content of costal saline soil and promoted the growth of R. communis and K. virginica, and their combined application could have much better effect, being of practical significance in improving the utilization efficiency of our saline soil phosphate resources and promoting the sustainable development of local agricultural production.

Key words: Water circumstances, Spatial patterns, GIS, Loess Plateau

秦超琦;吴向华;郑琨;钦佩. 解磷菌剂对海滨盐土有效磷含量及耐盐油料植物生长的影响[J]. 生态学杂志, 2009, 28(09): 1835-1841.

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