野荸荠生物学特性研究

Biological Characteristics of Wide Water Chestnut (Eleocharis plantagineiformis )

野荸荠主要依靠球茎无性繁殖，当球茎位于２０ｃｍ以下的土层内，出苗率开始极显著下降。田间出苗有两次高峰，分别在６月下旬和７月中旬。其出苗率分别为１４．６８％和２１．１％。水分是制约球茎发芽的关键因子，球茎失水比例达１３．３％时，将失去发芽能力。同时球茎再生能力很强，连续刈割１１次后，仍会出现新植株。

Wild water chestnut ( Eleocharis plantagineiformis ) is reproduced by bulb, the percentage of bulb sprouting reduced notably where it is at 20 cm below soil surface. There are two peaks of emergence in the field in early June and middle July with the emergence rate 14.68% and 21.1% respectively. Water content of the bulb is the main factor to influence its sprouting. When water losses down to 13.3%, it never sprout. But the bulb is stronger to survival, even if the bulbodium is out 11 times, it is still come up.