摘要
为探究南疆不同穗型冬小麦品种对株、行距距配置的响应,以两种穗型品种为材料,设定行距、株距配置为15 cm×1.7 cm、12.5 cm×2 cm、10 cm×2.5 cm、7.5 cm×3.3 cm、5 cm×5 cm等5个处理,研究不同株、行距配置条件下冬小麦干物质积累、转运、产量及其构成因素的差异。结果表明,在相同密度下,小麦干物质积累量随行距缩小逐渐增加;冬小麦籽粒产量的形成以花后同化物转运为主,适当缩小行距能显著提高冬小麦花前干物质转运和花后干物质生产,有利于提高小麦产量;南疆400万株·hm-2种植密度条件下,大穗型品种以5 cm×5 cm为最佳株、行距配置模式;多穗型品种分蘖能力较强,随着行距减少,分蘖增加,群体过大易发生倒伏现象。
In order to explore the response of different spike types of winter wheat varieties to the plant configuration in South Xinjiang,the‘Xindong 50’with large panicles and‘Xindong 22’with multiple panicles were taken as materials,five different treatmets of different spacing in the rows and spacing between rows,including 15 cm×1.7 cm,12.5 cm×2 cm,10 cm×2.5 cm,7.5 cm×3.3 cm,5 cm×5 cm,were set up to study the diffirence of the dry matter accumulation(DMC),the DMC translocaton,the grain yield and the grain yield components.The results showed that the DMC of the winter wheat increased with the decline of the row spacing under condition of same planting densities;the grain yield of the winter wheat was mostly contributed by the assimilates translocation after anthesis,the proper reduction of row spacing could significantly promote DMC translocation before anthesis and DMC production after anthesis,and was beneficial to improve the grain yield.Under the planting density of 400×104 hm-2 in southern Xinjiang,5 cm×5 cm was the optimal plant row configuration for large-panicle varieties.For the multi-panicle cultivars which had the stronger tillering ability compared with the large panicle ones,the tillers increased with the decrease of row spacing,but lodging risk also increased.
作者
梁雪齐
张锋
陈猛
李玲
吴全忠
陈国栋
翟云龙
LIANG Xueqi;ZHANG Feng;CHEN Meng;LI Ling;WU Quanzhong;CHEN Guodong;ZHAI Yunlong(College of Agriculture, Tarim University, Alar Xinjiang 843300, China)
出处
《西北农业学报》
CAS
CSCD
北大核心
2022年第3期279-286,共8页
Acta Agriculturae Boreali-occidentalis Sinica
基金
新疆生产建设兵团南疆重点产业支撑计划项目(2017DB010)
科研创新项目(TDGRI202016)。
关键词
株、行距配置
冬小麦
干物质积累与转运
产量
Plant and row allocation
Winter wheat
Dry matter accumulation and transportation
Yield
