蛇皮果高空压条繁殖技术的优化

The optimium technique on upper air layering rooting of Salacca zalacca

研究压条日期、母株年龄和ABT1号生根粉浓度对压条生根的影响，以确定不同压条日期或母株年龄蛇皮果高空压条适宜的ABT1号生根粉浓度，从而进一步优化蛇皮果高空压条繁殖技术体系。分别于4月、8月和12月在3—17年生蛇皮果林地涂施不同浓度的ABT1号生根粉溶液压条，4个月后统计压条生根情况。结果表明：4月中旬压条生根效果显著优于8月中旬和12月中旬压条。3年生蛇皮果生根效果较差，且开花率不到50％，不适宜压条，蛇皮果高空压条应选择4年生以上母株。压务生根效果随ABT1号生根粉浓度基本上呈先上升后下降趋势，蛇皮果高空压条最适宜的ABT1号生根粉浓度为750mg／L。压条最佳ABT1号生根粉浓度很少受压条日期和母株年龄的影响。

The effects of date for air layering, stock age and ABT 1 rooting powder were studied to optimize the propagation techniqne of Salacca zalacca by air layering. The studies were carried out in the fruit forests of different stock ages at different time. The results showed that date for air layering had a significant effect on air layering of S. zalacca, rooting effects of layers layered in April were significantly better than that of the layers layered in August and December, the cold weather should be avoided, and water should be supplied during air layering if it wasn＇ t rainy for a long time. Stock age had a significant effect on air layering of S. zalacca, the three years＇ old stocks of S. zalacca weren＇ t suitable for propagate steckling by air layering, because their flowering rate was less than 50%, and the rooting rate was lower. Air layering was suitable for the stocks with age more than four years old. ABT 1 rooting powder had a significant effect on air layering of S. zalacca, the optimum concentration of ABT 1 rooting powder for air layering was 750 mg/L. Among the three factors, there weren＇ t interaction effects, the optimum concentration of ABT 1 rooting powder for air layering didn＇ t depend on date for air layering and stock age.