%0 Journal Article
%T Effect of Various Mulching Durations with Plastic Film on Soil Microbial Quantity and Plant Nutrients of Spring Wheat Field in Semi-arid Loess Plateau of China<br>覆膜对春小麦农田微生物数量和土壤养分的影响
%A SONG Qiu-Hua
%A <br>宋秋华
%J 生态学报
%D 2002
%I 
%X Effect of various mulching durations with plastic film on soil microbial quantity and plant nutrients of the spring wheat field was investigated in semi\|arid Loess Plateau of northwest China for two years. Four treatments were employed: M 0\|no mulching, M 30 \|mulching for 30 days from sowing, M 60 \|mulching for 60 days, and M\|mulching for whole growth period. In 1999, a wet year with rich precipitation, the total soil microbial quantity increased faster and the higher level of soil microbial q...
%K soil microbes
%K spring wheat
%K plastic film mulch
%K Semi\|arid Loess Plateau
%K soil organic matter
%K plant nutrients<br>覆膜
%K 春小麦
%K 农田微生物数量
%K 土壤养分
%K 土壤微生物
%K 半干旱黄土高原区
%K 有机质
%K 养分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=51BA9AC4A5A16E4A&yid=C3ACC247184A22C1&vid=BC12EA701C895178&iid=59906B3B2830C2C5&sid=4F99DEDB606B5890&eid=156BB8D1386B6300&journal_id=1000-0933&journal_name=生态学报&referenced_num=24&reference_num=19