摘要
[目的]利用薄壳山核桃根蘖苗较多的特点开展根段扦插育苗试验,探讨根段粗度、长度、不同浓度萘乙酸对扦插成活率的影响.[方法]以根段粗度(5～10、10～15、15～20 cm)、根段长度(5、10、15 cm)、不同浓度萘乙酸(0、1 000、2 000倍液)3因素3水平设计正交试验,对薄壳山核桃开展根段扦插育苗试验.[结果]处理8号(插条粗度15 ～20 mm,插条长度10 cm,未用萘乙酸)成活率最高,达88％,插条长度是影响根插成活率的关键因子,插条越长扦插成活率越高,插条粗度和萘乙酸对成活率的影响较小;处理9号(插条粗度15～20mm,插条长度15 cm,萘乙酸浓度1 000倍液)扦插苗生长势最优,平均苗高15.57 cm,平均地径4.15 mm;影响根插苗地径和苗高生长的关键因子为根段粗度,插条长度对苗高也有一定影响.[结论]薄壳山核桃扦插成苗率高,培育2年即可作为砧木嫁接优良品种,生产上可充分利用该优势实现以苗繁苗.
Abstract
[Objective] The experiment on cutting propagation by root of Carya illinoensis was carried out,effects of root segment coarseness,length and different concention of NAA on cuttings survival rate were discussed.[Method] Experiment was conducted on cutting propagation by root of Carya illinoensis with root segment coarseness,length and different concention of NAA as influencing factors.[Result] The results showed that the highest survival rate was 88％ under No.8 treatment in which cutting wood width was 15-20 mm,cutting length was 10 cm and non use of NAA.The key factor influencing root cutting survival rate was the cutting length as the longer the cutting higher the cutting survival rate.The influence of cutting.wood width and NAA on survival rate was not significant.Growth vigor of cutting seedlings with average seedling height at 15.5 cm and average ground diameter at 4.15 mm was optimal under the No.9 treatment in which cutting wood width was 15-20 mm,cutting length was 15 cm and concentration of NAA was 1 000 times liquid.Cutting wood width was the main influential factor on seedling height and diameter growth of cutting seedlings.The cutting length also had a certain impact on seedling height.[Conclusion] The percentage of cutting propagation success was high and 2-year old of cutting seedlings can be used as rootstocks for grafted good varieties which can be make full use to realize to seedling.
基金项目
浙江省农业新品种选育重大科技专项(2012C12904-11)
海盐县科技项目(2014Y1B1015)
国家科技期刊平台
NSTL
维普
万方数据