大乌圆龙眼实生幼苗缺素沙培试验初报＊雷道才梁传平陈有志黄富宇（广西亚热带作物研究所南宁５３０００１）大乌圆是广西龙眼主栽品种之一，一些果园不同程度地出现营养失调现象和缺素症状。为准确地掌握缺素症状，进行了本试验。１材料与方法１９９３年８月至１９９４年... Preliminary Study on Absence of Sapiens in Seedlings of Larvae of Ocarina × Lei Dauai, Liang Chuanping, Chen Youzhi, Huang Fuyu (Guangxi Subtropical Crops Research Institute, Nanning 530001) Dahiuyuan is one of the main cultivars of longan in Guangxi. Some orchards appear malnutrition Phenomena and symptoms of deficiency. In order to accurately grasp the symptoms of deficiency, conducted the test. 1 Materials and Methods August 1993 to 1994 ...