山西农业大学学报（自然科学版）2024，Vol.44Issue(1)：53-60,8.DOI:10.13842/j.cnki.issn1671-8151.202311003
不同覆膜栽培方式下胡麻叶片叶绿素含量、失水速率及产量
Chlorophyll content,water loss rate and yield of flax under different film mulching cultivation methods
摘要
Abstract
[Objective]Drought is one of the abiotic stress factors restricting the growth and production of flax in the mountainous area of southern Ningxia.Exploring effective mulching cultivation methods for flax in the dryland fields of southern Ningxia can provide practical and theoretical support for addressing the drought issues during flax cultivation and promoting mulching cultiva-tion of flax.[Methods]From 2021 to 2023,the flax variety'Ningya 21'was used as the experimental material.Under field trial conditions,three mulching cultivation treatments were applied:flat film hole sowing(FHS),ridge film furrow sowing(RFS)and open field strip sowing(CK).The effects of different mulching cultivation methods on chlorophyll content,detached leaf water loss rate,and yield were analyzed.[Results]The results of three consecutive years of experiments under three mulching cultivation conditions showed that,in different mulching cultivation conditions within the same year,the chlorophyll content of flax leaves exhibited the order FHS>RFS>CK.However,the chlorophyll content varied under different mulching cultivation conditions among different years.Compared to CK,both RFS and FHS treatments showed higher plant height,fresh weight,and dry weight.The detached leaf water loss rate in 2021 and 2023 was in the order CK>RFS>FHS,while in 2022,it was CK>FHS>RFS;The yield showed the order FHS>RFS>CK,with the greatest yield increase observed in FHS in 2021,where the effective branch number,effective pod number,and yield per plant were higher than other treatments.The effective pod number and yield per plant showed the order FHS>RFS>CK.Compared to CK,both FHS and RFS increased the chlo-rophyll content,yield,effective branch number,and effective pod number of flax leaves and reduced the detached leaf water loss rate.FHS outperformed RFS,and in 2021,FHS achieved a significant increase in yield by 185.7 kg·hm-2.Correlation analysis showed a significant negative correlation between detached leaf water loss rate and chlorophyll content,as well as an extremely significant negative correlation with yield.There was a significant positive correlation between chlorophyll content and yield.[Conclusion]FHS not only increased the chlorophyll content,yield,effective branch number and effective pod num-ber of flax leaves,but also reduced the water loss rate of detached leaves,enhancing the drought resistance of flax.Therefore,FHS planting method is an effective cultivation measure suitable for flax production in the dryland fields of southern Ningxia.关键词
覆膜方式/胡麻/离体叶片失水速率/产量Key words
Film mulching/Flax/Detached leaf water loss rate/Grain yield分类
农业科技引用本文复制引用
杨治伟,曹秀霞,张炜,剡宽将,钱爱萍..不同覆膜栽培方式下胡麻叶片叶绿素含量、失水速率及产量[J].山西农业大学学报（自然科学版）,2024,44(1):53-60,8.基金项目
国家特色油料产业技术体系项目(CARS-14-2-28) （CARS-14-2-28）
宁夏回族自治区重点研发计划项目(2021BBF02020) （2021BBF02020）
