【摘要】 本文研究了马铃薯结薯期叶面喷施不同浓度 Ｂ 、 Ｃｕ 对其叶绿素含量、光合速率及产量的影响。结果表明， 叶面喷施 Ｂ、 Ｃｕ 均可使马铃薯的叶绿素含量增多、光合速率增加、产量提高， 两元素配合使用比单独使用效果好， ６ 个处理中， 以处理６ 叶绿 素含量最 多、光合 速率最 大、产量 最高， 其中 Ｂ 的 浓度 为０７ ％ ， Ｃｕ 的浓度为１ ％ 。更多还原

【Abstract】 The influence of different concentration of B,Cu on the content of chlorophyll,photosynthetic rate and yield of potato was studied.The results shown that they can increase the chlorophyll content,photosynthetic rate and yield by foliage spray of B and Cu.Mixed use of B and Cu was better than single one.According to the results obtained from 6 treatments,the best concentration is the mixture of B 0 7% and Cu 1%and it can achieve more content of chlorophyll,higher photosynthetic rate and higher yield.$$$$更多还原