摘要
对果园实施秸秆覆盖,短期内主要表现为保墒和调节土壤温度两大功效。研究在桃树果园实施秸秆覆盖3年以来对植物与土壤环境的影响,主要从地上部分桃树形态变化、地下部分根系生长变化、土壤养分与土壤微生物变化这几个方面将覆盖与对照进行对比分析。分析表明,覆盖比对照树冠体积、茎干断面、根系直径小于1 cm的总长分别增加33.9%、110.6%和115.69%,同时使土壤养分和微生物也发生很大变化,分别是对照硝态氮含量、真菌、细菌和放线菌含量的2.2倍、1.56倍、2.36倍和1.89倍。所以长期实施秸秆覆盖对植物生长和土壤环境的改善有着很大的积极作用。
The effects of straw mulch for peach trees show as moisture conservation and soil temperature regulation in short-term. The influence of straw mulch on peach trees for 3 years on change of plant-soil environment was studied through comparison analysis from the following aspects as the variation of figure of peach tree, root growth, soil nutrient and soil microbes. The result showed that the tree canopy volume, the cross section of trunk ,and the total length of root less than 1 cm of the straw mulch treatment increased 33. 9%, 110. 6 %and 115.69 % than CK treatment, respectively. At the same time, soil nutrient and soil microbes changed much. The quantity of nitrate-n, epiphyte, bacteria and actinomycetes is 2.2, 1.56, 2.36 and 1.89 times than the CK treatment, respectively. So, straw mulch for long time is useful for plant growth and improving soil environment.
出处
《节水灌溉》
北大核心
2007年第5期7-10,共4页
Water Saving Irrigation
基金
国家"十五"重大专项(2002AA2Z4211)
作者简介
贺军奇（1978-），男，博士，主要从事节水灌溉新技术研究。
