玉米生长期间土壤微生物量与土壤酶变化及其相关性研究

应用生态学报 ›› 1999, Vol. 10 ›› Issue (4): 471-474.

玉米生长期间土壤微生物量与土壤酶变化及其相关性研究

沈宏¹, 曹志洪¹, 徐本生²

1. 中国科学院南京土壤研究所, 南京 210008;
2. 河南农业大学农化室, 郑州 450002

收稿日期:1997-05-09 修回日期:1997-12-26 出版日期:1999-07-25 发布日期:1999-07-25
通讯作者: 沈宏,男,27岁,博士生,主要从事根际营养及碳素循环方面的研究.发表论文11篇.E-mail:shenhong@jlonline.com E-mail:shenhong@jlonline.com
基金资助:
国家自然科学基金资助项目(49671043).

Dynamics of soil microbial biomass and soil enzyme activity and their relationships during maize growth

Shen Hong¹, Cao Zhihong¹, Xu Bensheng²

1. Institute of Soil Science, Academia Sinica, Nanjing 210008;
2. Department of Soil Science and Agrochemistry. Henan Agricultural University, Zhengzhou 450002

Received:1997-05-09 Revised:1997-12-26 Online:1999-07-25 Published:1999-07-25

摘要/Abstract

摘要： 研究了玉米生长期间土壤微生物量碳、氮与土壤过氧化氢酶、蔗糖酶、脲酶、蛋白酶活性变化及其相关性。结果表明,玉米生长前期和中期,土壤微生物量碳、氮及酶活性迅速上升,并逐渐达到最大值;玉米生长后期,土壤微生物量碳、氮、酶活性下降至某一值后并逐渐趋于平稳。几种处理相比较,以秸秆+尿素处理的土壤微生物量碳、氮及酶活性为最大。除玉米生长后期,土壤微生物量碳、氮与碱解氮、活性腐殖质、土壤pH不相关外,土壤微生物量碳、氮与土壤过氧化氢酶、蔗糖酶、脲酶、蛋白酶活性及速效养分在玉米生长期间均相关或极相关.

关键词: 土壤微生物量碳、氮, 土壤酶活性, 玉米

Abstract: The dynamics of soil microbial biomass Cand Nand of the activities of soil catalase, invertase, protease and urease, and their relationships during maize growth were studied. The microbial biomass Cand Nand the enzyme activities increased rapidly and gradually reached a maximum during the early and middle periods of maize growth, then decreased and gradually remained stable during the later period. The microbial biomass and the enzyme activities were the highest in straw plus urea treatment, compared with straw treatment, urea treatment and control. No relationships were observed between microbial biomass Cand Nand hydrolyzable nitrogen, active humus and pHduring the late period of maize growth, while the relationships between microbial biomass Cand Nand activities of catalase, protease and urease reached significant or extremely significant level during maize growth.

Key words: Soil microbial biomass C and N, Soil enzyme activity, Maize

沈宏, 曹志洪, 徐本生. 玉米生长期间土壤微生物量与土壤酶变化及其相关性研究[J]. 应用生态学报, 1999, 10(4): 471-474.

Shen Hong, Cao Zhihong, Xu Bensheng. Dynamics of soil microbial biomass and soil enzyme activity and their relationships during maize growth[J]. Chinese Journal of Applied Ecology, 1999, 10(4): 471-474.

参考文献

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