棉花品种对缺硼的敏感性及其硼效率的研究  

A STUDY ON THE B-UTILIZING EFFICIENCY AND B-DEFICIENCY SUSCEPTIBILITY OF DIFFERENT COTTON CULTIVARS

作　　者：曹享云[1] 宋世文[1] 刘武定[1] 

机构地区：[1]华中农业大学土化系

出　　处：《华中农业大学学报》1996年第6期559-562,共4页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金

摘　　要：在土壤含热水溶性硼为０．０９ｍｇ／ｋｇ（－Ｂ）与外加硼至１．０ｍｇ／ｋｇ（＋Ｂ）的条件下，盆栽７０个陆地棉（ＧｉｏｓｙｐｉｕｍｈｉｒｓｕｔｕｍＬ）品种，以检验品种间对缺硼敏感性差异。结果表明，７０个品种的地上部干物重敏感系数（－Ｂ／＋Ｂ×１００）为２６．６～１０２之间。如以其干物重敏感系数小于５０为缺硼敏感品种，大于９０为不敏感品种，获得敏感品种３个，不敏感品种５个。在缺硼条件下叶片硼效率（单位硼所产生的干物重）与缺硼敏感系数相关性达５％水准，不敏感品种硼效率高，敏感品种硼效率低。但无论缺硼与否。Under boron deficient(-B,HWSB of the applied soil 0.09 mg/kg)and normal(+B,added to 1.0mg/kg)conditions, this experiment was conducted to study the susceptibility of 70 cotton cultivars[Giossypium hirsutum.L]in response to B deficiency. The results showed that there were apparent differences among the cultivars and the dry weight susceptibility coefficient of the shoots[(-B+B)×100]fluctuated between 26.6 and 102.3 boron sensitive cultivars whose coefficients were less than 50 and 5 non-sensitive whose coefficients were more than 90 were selected.It was also found that the B-using efficiency had significant relationship with B deficieny sensitivity when the cultivars were under the B deficient condition.In this situation,The B-using efficiency of the non-sensitive was high and that of the sensitive low. However,the amount of B-uptakig of different cultivars did not change much with the sensitivity of B dificiency.

关 键 词：棉花 土壤缺硼 敏感性 硼效率 

分 类 号：S143.71[农业科学—肥料学] S562[农业科学—农业基础科学]