河北省魔芋动态生长规律的研究

STUDY ON THE DYNAMIC GROWTH OF AMORPHOPHALLUS RIVIERI IN HEBEI PROVINCE

对魔芋动态生长规律进行了试验研究。结果表明,魔芋在河北省栽培,其根条数随生育进程而增加,以出苗后35～65 d 发根数最多;其株高生长动态符合Logistic 生长曲线,且出苗后很快进入生长高峰;伴随着种芋发芽、出苗、展叶,新球茎同时形成,换头完成后,新球茎进入急速膨大期;全株鲜、干重随生育进程而增加,增加最多最快的时期是在出苗后65～95d,干物质在换头前主要分配给地上部,换头后主要分配给地下球茎。

The dynamic growth rhythm of Amorphophallus rivieri was studied in the paper.The results showed as follows:The number of roots increased with growing time,the increment of roots number reached maximum during 35～65 days after seedling emerged.The growth dynamic of plant height was in keeping with Logistic equation,and the plant height reached rapid growing stage not long after seedling emerged.The new corm formed to follow the germination of seed corm,emergence of seedlings and leave developing,sharply expanded after corm regeneration.The fresh or dry matter weight of plant increased with growing time,and sharply increased during 65～95 days after seedling emerged.The dry matter mainly distributed to above ground organs before corm regeneration,and to under ground portion after corm regeneration.