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作 者:李紫帅 柳文杰 张喜年 扎西占堆 辛福梅[1] LI Zishuai;LIU Wenjie;ZHANG Xinian;Zhaxi zhandui;XIN fumei(Resources&Environment College,Tibet Agriculture&Animal Husbandry College,Nyingchi Tibet,860000,China)
机构地区:[1]西藏农牧学院资源与环境学院,西藏林芝860000
出 处:《高原农业》2022年第3期253-261,共9页Journal of Plateau Agriculture
基 金:西藏自治区自然科学基金(ZRKX2021000033);农业资源与环境学科建设项目(藏财预指2020-001号)。
摘 要:为培育优质的藏川杨苗木,本文探讨了不同生长素处理对藏川杨插穗生根的影响。以藏川杨枝条为试验材料,以清水作为对照,设置了不同类型的生根粉(ABT1号、2号、3号)及不同浓度的2,4-D(100、200、300、400、500 mg/L),测定其插穗苗高、地径、总根数、最长根长及生物量等指标。不同生根粉对藏川杨后期的成活株数表现依次为:ABT1号>ABT2号>ABT3号;较低浓度的2,4-D(100、200 mg/L)处理下藏川杨后期的成活率、苗高、地径、总根数均表现较好。对比不同类型的生根粉和不同浓度的2,4-D后发现,适宜浓度的生长素处理对藏川杨扦插苗根系发生和发育具有促进的作用。在生产中,为了提高藏川杨的成活率,可以选用ABT1号和较低浓度的2,4-D(100、200 mg/L)。In order to cultivate high quality seedlings of Populus szechuanica Schneid,this paper investigated the effect of different growth factor treatments on the rooting of Populus szechuanica Schneid.Different types of rooting powder(No.1,No.2 and No.3)and different concentrations of 2,4-D(100,200,300,400 and 500 mg/L)were used as the experimental materials,and water was used as the control to determine the seedling height,ground diameter,total root number,the longest root length and biomass of the scions.The effect of different rooting powders on the number of surviving plants in the later stage of Populus szechuanica Schneid was as follows:ABT1>ABT2>ABT3.The survival rate,seedling height,ground diameter and total root length of Populus szechuanica Schneid were better with the lower concentration of 2,4-D(100 and 200 mg/L).Comparing different types of rooting powder and different concentrations of 2,4-D,it was found that the appropriate concentration of growth hormone treatment had a beneficial effect on root development and development of Populus szechuanica Schneid cuttings.In production,rooting powder No.1 and lower concentrations of 2,4-D(100,200 mg/L)can be used to improve the survival rate of Populus szechuanica Schneid.
分 类 号:S792.11[农业科学—林木遗传育种]
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