%0 Journal Article
%T Changes and Mechenism of Soil Fertility Under Two Kinds of Sugarcane Cultivations During 25 Years——A Case Study of Longchuan Farm,Yunnan Province<br>25年来两类植蔗土壤肥力演变及原因分析——以云南陇川农场为例
%A GUO Jia-wen
%A LIU Shao-chun
%A WANG Long
%A ZHANG Yue-bing
%A CUI Xiong-wei
%A <br>郭家文
%A 刘少春
%A 王龙
%A 张跃彬
%A 崔雄维
%J 土壤
%D 2010
%I 
%X The changes and mechanism of soil fertility under two kinds of sugarcane cultivations during 25a were studied at Longchuan farm based on the data obtained from the surveys in 1983 and 2007. The results showed as follows: soil organic matter contents in dry land and paddy field reduced by 12.65% and 25% respectively, total nitrogen content changed little in dry land but reduced by 1.42% in paddy field, available N increased by 1.53% in dry land but reduced by 22.65% in paddy field, available P increased by 95.02% and 6.02% respectively in dry land and paddy field, available K increased by 26.36% in dry land but reduced by 47.28% in paddy field. The data of sugar yield and sugar recovered ratio proved that sugarcane leaf returning to field could improve soil fertility sustainably, which was attributed to for the continuous high sugar yield in studied region.
%K Soil fertility
%K Sugarcane cultivation soil
%K Sugarcane leaf returning to field
%K Sugarcane<br>土壤肥力
%K 植蔗土壤
%K 蔗叶还田
%K 甘蔗
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=56F69E970C6E5190CDB409D28DD0E3C6&aid=DFE8D7565CCA08B68607D1BF56339CCE&yid=140ECF96957D60B2&vid=ECE8E54D6034F642&iid=0B39A22176CE99FB&sid=D5C73DEF4CF8FAF3&eid=E089FDF3CDAE8561&journal_id=0253-9829&journal_name=土壤&referenced_num=0&reference_num=15