作 者：
龙光霞;黄渝岚;何红;唐新莲;赵国梅;蒋立序;黎晓峰
摘 要：
【目的】研究影响甘蔗幼苗失绿的土壤因素,为克服失绿现象提供科学依据。【方法】对广西南宁、崇左、来宾等地甘蔗发生幼苗失绿问题的土壤营养进行调查研究,分析土壤pH值、铁、铝、锰和有机质含量等与甘蔗失绿现象的关系。【结果】甘蔗幼苗失绿病发土壤多属强酸性土壤,活性铝、交换性锰水平较高;土壤有机质、氮磷钾全量和有效水平总体上属于中高等水平;土壤有效铁含量不高,而与土壤有机质含量呈极显著正相关。【结论】甘蔗幼苗失绿可能与强酸性土壤中过多的活性铝、锰及高效整合铁有关。
译 名：
Characterizing nutrient status of soils causing chlorosis in sugarcane seedlings
作 者：
LONG Guang-xia, HUANG Yu-lan, HE Hong, TANG Xin-lian, ZHAO Guo-mei, JIANG Li-xu, LI Xiao-feng * (Agricultural College , Guangxi University, Nanning 530005, China)
关键词：
sugarcane seedlings; chlorosis; soil; nutrition; character
摘 要：
[Objective]The studies were conducted to elucidate the causes of chlorosis in sugarcane in order to alleviate its effects and to develop some control measures. [Method]Some soil physico-chemical characteristics such as pH and organic matter content and soil's nutrient status was analyzed during the early growth period of sugarcane planted in Nanning, Chongzuo and Laibin,Guangxi(China). [Result]The soils cultivated with sugarcane exhibiting chlorotic symptoms were found strongly acidic with higher levels of exchangeable Mn and available Al content, moderate levels of organic matter and total and available N, P and K content. Available Fe content of the soils was low, however,and the Fe content showed significant and positive correlation with the organic matters content of soils. [Conclusion]The results of the present study indicated that lower pH and soil organic matter content and excessive available Al and exchangeable Mn may be associated with the chlorosis in sugarcane seedlings.
