%0 Journal Article
%T Nutrition characteristics in root surface and rhizosphere soils of direct-seeding rice in rice-duck eco-farming system<br>稻鸭生态种养系统直播水稻根表和根际土壤营养特性研究
%A SHEN Jian-Kai
%A HUANG Huang
%A FU Zhi-Qiang
%A ZHANG Yang-Zhu
%A LONG Pan
%A GAO Wen-Juan
%A CHEN Can
%A LIAO Xiao-Lan
%A HU Ying
%A XIE Wei
%A ZHENG Hua-Bin
%A ZHANG Ya
%A <br>沈建凯
%A 黄 璜
%A 傅志强
%A 张扬珠
%A 龙 攀
%A 高文娟
%A 陈 灿
%A 廖晓兰
%A 胡 英
%A 谢 伟
%A 郑华斌
%A 张 亚
%J 中国生态农业学报
%D 2010
%I 
%X Soil organic carbon, N, P, K contents and pH in root surface and rhizosphere soils of early season rice in rice-duck eco-farming system and mono-cropping rice system were investigated in a field plot experiment. The results show that the soil pH in root surface and rhizosphere of rice in rice-duck eco-farming system is increased by 4.41%, 0.85% and total N is decreased by 0.11 g·kg-1, 0.11 g·kg-1 compared with those in mono-cropping rice system, respectively, while changes in total P and total K contents are not statistically significant. Available N, available K in rice root surface soil in rice-duck eco-farming system are 30.80 mg·kg-1, 17.93 mg·kg-1 higher and available P is 8.66 mg·kg-1 lower than those in mono-cropping rice system, however, available N and available K in rhizospere soil are 15.13 mg·kg-1, 7.61 mg·kg-1 lower and available P is 9.66 mg·kg-1 higher than those in mono-cropping rice system. Compared with the mono-cropping rice system, in rice-duck eco-farming system, active organic carbon and high-active organic carbon in root surface soil are increased by 2.17 g·kg-1 and 0.56 g·kg-1 respectively, total organic carbon is deceased by 0.99 g·kg-1, and total organic carbon, active organic carbon and mid-active organic carbon in rhizosphere soil are decreased by 2.39 g·kg-1, 2.64 g·kg-1 and 0.72 g·kg-1, respectively. It is illustrated that in rice-duck eco-farming system, available K and active organic carbon are accumulated in root surface soil, and available P is accumulated in rhizosphere soil. Hence, soil nutrient status in root surface and rhizosphere in rice-duck eco-farming ecosystem are significantly improved, which probably have a good effect on nutrient absorption of rice.
%K Root surface soil
%K Rhizosphere soil
%K Root zone
%K Direct-seeding rice
%K Soil nutrition
%K Rice-duck eco-farming system<br>根表土壤
%K 根际土壤
%K 根域
%K 直播水稻
%K 土壤营养
%K 稻鸭生态种养
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=F25191243EB205D3EA76DCD8E3FBFACC&yid=140ECF96957D60B2&vid=13553B2D12F347E8&iid=B31275AF3241DB2D&sid=D291DCA663E1D24D&eid=59B00AA7F83CF649&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=0