摘要
[目的]研究滇黄精种子育苗的最佳育苗基质、GA_(3)浸种浓度、浸种时间。[方法]按裂区试验设计3个基质、5个GA_(3)处理浓度、3个处理时间,研究育苗基质、GA_(3)浸种浓度、浸种时间对出苗率及1年生苗生长量的影响。[结果]育苗基质采用河沙、河沙+红壤土(1∶1),GA_(3)浓度在100 mg/L以下,浸种时间72 h,播种330 d,出苗率最高达95.44%。基质、浸种时间、基质×浸种时间对出苗率的影响达极显著水平,GA_(3)浓度、基质×GA_(3)浓度对出苗率的影响达显著水平,基质×GA_(3)浓度×浸种时间、GA_(3)浓度×浸种时间交互作用对出苗率的影响差异不显著;出苗1 a后,育苗基质对滇黄精小苗各部分生物量的影响达极显著水平,不同GA_(3)浓度对各部分生物量影响均不显著,不同浸种时间对小苗的平均须根数影响达极显著水平,对其余生物量的影响达显著水平。[结论]在滇黄精育苗中,宜采用2层基质复合育苗,即河沙或河沙+红壤土(1∶1)作顶层萌芽出苗育苗基质,专用漂浮育苗基质作底层培育壮苗。
[Objective]To study the optimal seedling substrate for Polygonatum kingianum seed cultivation,GA_(3) soaking concentration and soaking time.[Method]Three matrices,five GA_(3) treatment concentrations,and three treatment times were designed according to the split zone experiment to study the effects of matrix GA_(3) concentration and treatment time on seedling emergence rate and one-year seedling growth.[Result]The seedling substrate used was river sand,river sand+red soil(1∶1).When the concentration of GA_(3) was below 100 mg/L,the soaking time was 72 h,and the sowing time was 330 d,the seedling emergence rate was up to 95.44%.The effects of substrate,soaking time,and substrate×soaking time on seedling emergence rate reached a highly significant level.The effects of GA_(3) concentration and substrate×GA_(3) concentration on seedling emergence rate reached a significant level,with substrate×GA_(3) concentration×soaking time,the interaction between GA_(3) concentration and soaking time had no significant difference in the effect on seedling emergence rate.After one year of emergence,the effect of seedling substrate on the biomass of various parts of Polygonatum kingianum seedlings reached a highly significant level.Different GA_(3) concentrations had no significant effect on the biomass of each part,and different soaking times had a highly significant impact on the average number of fibrous roots of seedlings,and had a significant impact on the remaining biomass.[Conclusion]In the cultivation of Polygonatum kingianum seedlings,it is advisable to use a two-layer substrate composite cultivation,that is,river sand or river sand+red soil(1∶1)as the top layer germination seedling cultivation substrate,and a dedicated floating seedling cultivation substrate as the bottom layer for cultivating strong seedlings.
作者
钱迎新
白宏芬
余艳
周庆宏
普绍芹
陈晓祥
由瑄
QIAN Ying-xin;BAI Hong-fen;YU Yan(Chuxiong Forestry and Grassland Science Research Institute,Chuxiong,Yunnan 675005)
出处
《安徽农业科学》
CAS
2024年第17期105-108,129,共5页
Journal of Anhui Agricultural Sciences
基金
2023年云南省“三区”科技人才支持计划项目(楚财教[2023]99号)
2023年中央财政林业科技推广示范项目(云[2023]TG06号)。
关键词
滇黄精
种子
繁育技术
Polygonatum kingianum
Seed
Breeding techniques
