摘要
为研究施肥对青稞干物质积累、分配及产量的调节作用,以‘藏青27’、‘QTB13’和‘QTB25’为试验材料,比较分析不同施肥处理下干物质积累、分配及产量的变化规律。结果表明:增加施肥量促进青稞分蘖期—成熟期的干物质积累及开花期和成熟期干物质向营养器官和籽粒的分配,提高了花前营养器官贮藏同化物转运量及对籽粒贡献率,降低了花后同化物输入籽粒量对籽粒贡献率。‘QTB13’和‘QTB25’在F2条件下,更有利于干物质积累及向营养器官和穗部的分配,花后同化物输入籽粒量最大,产量也最大。‘藏青27’在F3条件下,更有利于干物质积累及向营养器官和穗部的分配,花后同化物输入籽粒量和对籽粒贡献率最大,产量也最大。说明合理施肥有利于青稞干物质积累分配及产量提高。
To explore the regulation effect of fertilization on dry matter accumulation, distribution and yield of hulless barley, taking’Zangqing 27’,’QTB13’and’QTB25’as experimental materials, we analyzed the change rules of dry matter accumulation, distribution and yield of these varieties under different fertilization treatments. The results showed that: the increase of fertilization promoted dry matter accumulation from tillering to maturity stage and the distribution of dry matter to vegetative organs and grains at flowering and maturity stage;and improved the transport of pre-flower nutrition organs stored assimilates and the contribution rate to grain, decreased the post-flower assimilates allocation to grain and the contribution rate to grain;the F2 was conducive to accumulate the dry matter and allocate to vegetative organs and grains of’QTB13’and’QTB25’, while had the highest post-flower assimilates allocation to grain and yield of’QTB13’and’QTB25’;the F3 was conducive to accumulate the dry matter and allocate to vegetative organs and grains,while had the highest post-flower assimilates allocation to grain, and the contribution rate and yield of’Zangqing27’. The study indicates that appropriate fertilization is beneficial to the accumulation, distribution of dry matter and can improve the yield of hulless barley.
作者
朱明霞
白婷
靳玉龙
张玉红
唐亚伟
Zhu Mingxia;Bai Ting;Jin Yulong;Zhang Yuhong;Tang Yawei(Institute of Agricultural Products Development and Food Science,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850032;Institute of Agricultural Research,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850032)
出处
《中国农学通报》
2020年第25期7-13,共7页
Chinese Agricultural Science Bulletin
基金
国家大麦青稞产业技术体系(CARS-05-05A-02)
青稞精深加工技术创新平台(XZNKY-2019-C-045)。
关键词
施肥
春青稞
干物质
积累与分配
籽粒产量
fertilization
spring hulless barley
dry matter
accumulation and distribution
grain yield
