糙花少穗竹发笋及幼竹高生长规律的研究

Study on the Budding and Height Growth of Oligostachyum scabriflorum

对糙花少穗竹发笋期及幼竹高生长的研究表明 :糙花少穗竹发笋期在 2月中旬至 5月上旬 ,发笋初期在 2月中旬至 3月上旬 ,出笋株数占整个生长期出笋总数的 17.6 % ,笋重占 14 .5 % ;发笋盛期在 3月中旬至 4月下旬 ,出笋株数占整个生长期出笋总数的 72 .1% ,笋重占 78.1% ;发笋末期在 5月 ,发笋株数占整个生长期出笋总数的 10 .3% ,重量占 7.4 % ;发笋初期平均单株笋重0 .378kg,盛期平均单株重笋 0 .4 97kg,末期平均单株笋重 0 .32 9kg,表现为 :盛期笋 >初期笋 >末期笋 ;糙花少穗竹幼竹高生长高峰在笋出土后第 3～ 33d,高生长初期平均生长量 7.93cm· d-1,后期平均生长 4 .4 4cm· d-1,最大日生长量为 2 4 cm,整个生长期平均日生长量 15 .13cm。

The budding period and height growth of Oligostachyum scabriflorum were observed. The result showed that the shoot of Oligostachyum scabriflorum budded from mid-Feb. to May. 72.1 percent of the budded shoots presented themselves from Mid-March to the last ten days of Apr., and their weight took up 78.1 percent. The average weight of one shoot was 0.378 kg in the early budding period, 0.497 kg in flourishing budding period, 0.329 kg in declining period. The height growth climax appeared from 3rd day to 33rd after budding, with an average height growth of 17.48 cm·d -1 and a maximum height growth of 24 cm·d -1 . The average height growth amount in the whole growth period was 15.13 cm·d -1 .