猫爪藤的物候观测

经过2002年～2004年研究，认为光强是影响猫爪藤开花结实的主要生态因子，初步摸清了猫爪藤的物候节律，并初步确定其人工清除的时间．每年7月上旬果实开始成熟，7月下旬-8月上旬果实大量成熟．然后蒴果开始开裂．猫爪藤的防除应该选在每年7月上旬种子成熟之前，否则待种子成熟后再采取措施，会人为增加种子的扩散和传播．

Phenological Observations on Macfadyena unguis-cati (L.) A.Gentry

Through research during 2002~2004,it is regarded that the light intensity is the key biological factor affecting the flowering and fruiting of the invasive weed Macfadyena unguis-cati(L.) A.Gentry.The Phenological law of M.unguis-cati is figured out in this paper,and the suitable time to control M.unguis-cati is determined primarily.The fruit of M.unguis-cati begins to mature on the first ten days of July and matures largely from the last ten-day of July to the first ten-day of August.The ripe fruit begins to split then.It is considered that M.unguis-cati should be controlled manually before the fruit matures on the first ten days of July.Otherwise,it might enhance the spread of the seeds artificially if the measures are taken after the fruit matures.