2010•Anhui Nongye Daxue xuebaoRequires access
Effect of wheat and maize straw returning on dynamic of soil nutrient
Lei Wang, Zhu Lin, Shao-Qiang Tao, Jincai Li, Xueshan Shen
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Abstract
The orientation trails were conducted to study the effect of straw returning on dynamic of soil nutrients under maize straw full smash returning and wheat straw rotary tillage returning combined with synchronal fertilization application.The results showed that the soil total nitrogen contents of all treatments decreased in some degrees,but the content of available N took on trend of ascending during the growth of wheat under straw returning.It took an obvious role for maize straw full smash returning and wheat straw rotary tillage returning to stabilize the level of soil organic matter during the prophase of wheat growth(before period of wheat jointing).Straw returning took part in reducing decrease of available phosphorus of soil.