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应用酸性磷酸酶进行番茄磷素诊断

DOI: 10.3321/j.issn:1000-7091.1991.02.013, PP. 78-83

Keywords: 番茄,酸性磷酸酶,叶饼法,匀浆法

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Abstract:

本文旨在探索用叶片中酸性磷酸酶活性(APA)进行番茄磷素诊断.研究发现:叶饼法(6叶饼或12叶饼)三个反应时问(15、30和60分钟)所测出的功能叶片的APA与叶片的磷含量(P%)、全株(不包括根系)的P含量(P%)及植株干重都呈极显著负相关(P<0.01).匀浆法只有15分钟所测定的功能叶片APA与它们呈极显著负相关(P<0.01).此法比起测定植株体内磷的含量要快速简单得多,平均每15分钟测定一个样,很适用于生产实践.但由于APA不但受P营养状况、株龄及环境因子的影响,而且受测定条件的控制,要建立一个定量的实用的APA指标还相当艰难.

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