生长调节剂对祁连圆柏全光照喷雾扦插效果的影响

Influences of Growth Regulator on the Spray Cutting Effect of Sabina przewalskii under Full Illumination Conditions

通过对6年生张掖种源祁连圆柏2年生枝作为插穗进行扦插试验研究,采用生长调节剂ZTP、ABT1和ABT2号生根粉浸泡插穗,待苗木停止生长后调查成活率和生长情况,经方差分析和多重比较可知,各处理因素间差异显著;影响插穗生根最大的是质量分数为100 mg/kg的ABT1号生根粉浸泡2 h;影响插穗主根生根长度、生长量最大的是质量分数为100 mg/kg的ABT1号生根粉浸泡2 h。通过极差分析可知,对插穗生根率的影响因素最大的为生长调节剂种类,质量分数次之,浸泡时间较弱;对插穗生根量和生根长度的影响因素最大的为生长调节剂种类,浸泡时间次之,质量分数较弱。

The cutting test with 2-year-old branches of 6-year-old Sabina przewalskii from Zhangye as cutting slips was made. The cutting slips were soaked with growth regulators ZTP, ABT1 and ABT2 rooting powder, and the survival rate and growth condition were investigated after the seedlings stopped growing. The results of variance analysis and multiple comparison showed that there was significant difference among various factors. To soak for 2 h with ABT1 rooting powder with the mass fraction of 100 mg/kg had the greatest influences on the cutting and rooting. To soak for 2 h with ABT1 rooting powder with the mass fraction of 100 mg/kg had greatest influences on the root length and biomass of the cutting taproot. The results of range analysis showed that the most influencing factor on the rooting rate of cutting slips was the kind of growth regulators, the mass fraction was the second, and the soaking time was the third. And the most influencing factor on the root amount and root length of cutting slips was the kind of growth regulators, the soaking time was the second and the mass fraction was the third.