干旱地区农业研究2009，Vol.27Issue(4)：146-151,6.
秸秆还田对土壤脱氢酶和多酚氧化酶活性动态变化的影响
Effect of matching use of straw and fertilizer on the dynamic changes of soil dehydrogenase and polyphenoloxidase activities
摘要
Abstract
Soil enzyme activities play an important role in t he material cycle and energy flow of ecosystem. The objective of this field expe riment was to determine the effect of the use of organic and chemical fertilizer s on the dynamic changes of soil dehydrogenase and polyphenoloxidase activities in growth stages of winter wheat. The experiment included five fertilizer treatm ents: control (no fertilizer); returning corn straw to field; return ing corn straw to field combining application of manure; returning corn stra w to field combining application of nitrogen fertilizer (pure N 210 kg/hm2); a nd returning corn straw to field combining application of nitrogen (pure N 2 10 kg/hm2) and phosphate fertilizers (P2O5 150 kg/hm2). Each treatment w as replicated four times. The results showed that the fluctuation of the trend o f dynamic changes of soil dehydro genase activity was much stronger than that of polyphenoloxidase activity. Manure application and returning corn straw to fiel d could increase significantly the dehydrogenase activity. In the late growth st age of winter wheat, nitrogen fertilizer application could increase significantl y the dehydrogenase activity, but the increasing action was weakened by the inpu t of phosphate fertilizer. The effect of phosphate fertilizer application and re turning corn straw to field on the soil polyphenoloxidase activity did not reach the significant level. In the middle growth stage of winter wheat, manure and n itrogen fertilizer application could restrain the polyphenoloxidase activity in this experiment. But in late stages, especially in April and May, the restrainin g action became weaker.关键词
秸秆还田/脱氢酶/多酚氧化酶/动态变化Key words
straws/dehydrogenase/polyphenoloxidase/dynamic cha nges分类
农业科技引用本文复制引用
陈强龙,谷洁,高华,秦清军,甄丽莎,陈胜男,孙利宁..秸秆还田对土壤脱氢酶和多酚氧化酶活性动态变化的影响[J].干旱地区农业研究,2009,27(4):146-151,6.基金项目
国家自然科学基金(40771109,40871119) （40771109,40871119）
科技部农转资金(2007GB2G000394) （2007GB2G000394）
国家科技支撑计划(2007BAD89B16,2006BAD17B01-01) （2007BAD89B16,2006BAD17B01-01）
