省藤族4种栽培植物的高空压条研究

Propagation of 4 Species of Calameae Plants by Air Layering

以海南定安、澄迈和文昌的蛇皮果萌条为试材,研究降雨频度对压条生根的影响。以广州黄藤、单叶省藤和版纳省藤萌条为试材,研究ABT1号生根粉和压条部位对黄藤压条生根的影响,并且比较黄藤、单叶省藤和版纳省藤生根差异。结果表明:文昌蛇皮果高空压条的生根率和生根数明显低于降雨频度较高的定安和澄迈;ABT1号生根粉对黄藤高空压条生根率和生根数具有极显著或显著影响,生根率和生根数均随ABT1号生根粉浓度递增呈先上升后下降趋势,最佳浓度为1 500 mg/L;叶鞘基部以上套杯埋土的黄藤萌条不生根;3种棕榈藤中以版纳省藤生根率最高,根长最大,单叶省藤生根数最多,黄藤生根各指标均最低,并且总体上由于压条期间降雨频度过低致使3种棕榈藤植物生根效果均不理想,生根率最大值为40%,生根数最大值为1.7条。研究结果也表明在文昌4月压条和在广州7月上旬压条均应适当补充基质水分。

Suckers of Salacca zalacca were air layered in three areas of different rainfall frequencies, namely Dingan County, Chengmai County and Wenchang City of Hainan. The results showed that the suckers layered in Wenchang City of Hainan had a larger rooting rate and rooting number than the suckers layered in Dingan County and Chengmai County, because the rainy frequency of Wenchang City was the lowest in the three areas. Suckers of three rattan plams, i.e. Daemonorops margaritae （Hance）Becc, Calamus simplicifolius Wei and Calamus nambarieusis Becc.var xishuangbannaensis S.J.Pei et S. Y. Chen, were air layered in Guangzhou. The results showed that the suckers scrapped above the base of sheath didn＇t have any roots. With the concentration of ABT#1 rooting power increasing, the rooting rate and rooting number of D. margaritae rose at the beginning, then went down, and got its best value when the concentration was 1 500 mg/L. Among the three rattan palms, the highest rooting rate and the longest roots were found in the suckers of C. nambarieusis var xishuangbannaensis, the largest rooting number was found in the suckers of C. simplicifolius. But the rooting rate and rooting number were not ideal because of less rainfall frequency during air layering , the highest rooting rate and rooting number was only 40% and 1.7 respectively. It was implied that water should be supplied during air-layering.