【摘要】 【目的】通过浸根处理试验，总结ABT1生根粉对青海云杉移植苗根系生长的影响，以期为培育根系发达、形态优良、抗逆性强的移植苗提供可靠依据。【方法】以3-0青海云杉苗及ABT1生根粉为试验材料，设置对照（CK）、FS1(50 mg·L^-1)、FS2(100 mg·L^-1)、FS3(150 mg·L^-1)、FS4(200 mg·L^-1)不同浓度梯度浸根处理试验小区进行移植试验，调查分析不同浓度的ABT1生根粉浸根处理对青海云杉移植苗根系生长的影响。【结果】试验表明，使用FS3处理后的平均生根率为92.3%、≥5 cm的平均根数为12.6条、平均根长为15.8 cm、生根指数为172.3，处理后的根系生长指标均优于对照CK和其他处理，其他处理虽然优于对照CK，但差异并不明显，由高到低依次排序为FS3、FS2、FS1、FS4、CK。【结论】生产中使用100～150 mg·L^-1 ABT1生根粉浸根处理后能够明显促进青海云杉移植苗根系生长，这是由于生根粉中的植物生长调节剂能够调节植物体内的激素平衡，增强苗木根系的吸收能力，促进细胞的分裂和伸长，从而促进了苗木根系的生长和发育。更多还原

【Abstract】 【Objective】Through the root soaking treatment experiment,to understand the effect of ABT1 rooting powder on the root growth of Picea crassifolia transplanted seedlings,in order to provide a reliable basis for cultivating transplanted seedlings with well-developed root systems,excellent morphology and strong stress resistance．【Method】3-0 Picea crassifolia seedlings and ABT1 rooting powder were used as the experimental materials.Different concentration gradient root immersion treatment test plots of control（CK）,FS1(50 mg·L^-1),FS2(100 mg·L^-1),FS3(150 mg·L^-1),and FS4(200 mg·L^-1)were set up for transplantation experiments.To investigate and analyze the effects of root soaking treatment with different concentrations of ABT1 rooting powder on the root growth of transplanted Picea crassifolia seedlings．【Result】The experiment showed that the average root growth rate after treatment with FS3 was 92.3%,the average number of roots ≥ 5 cm was 12.6,the average root length was 15.8 cm,and the root growth index was 172.3.The root growth indicators after treatment were all better than those of the control CK and other treatments.Although the other treatments were better than the control CK,the differences were not obvious.The order from high to low is FS3、FS2、FS1、FS4、CK．【Conclusion】Rooting treatment with 100-150 mg·L^-1 ABT1 rooting powder in production can significantly promote the root growth of transplanted Picea crassifolia seedlings.This is because the plant growth regulators in the rooting powder can regulate the hormone balance in the plant,enhance the absorption capacity of the seedling roots,and promote cell division and elongation.This thus promotes the growth and development of the root system of the seedlings.更多还原