摘要
以油用向日葵T562为供试材料,采用二因素裂区设计,研究了5个播期(4月25日、5月2日、5月9日、5月16日及5月23日)和4个种植密度(3.75×10^(4)、4.50×10^(4)、5.25×10^(4)、6.00×10^(4)株/hm^(2))条件下向日葵干物质转运及产量变化。结果表明:随着播期的推迟,向日葵各生育期均缩短,播期对向日葵出苗至开花阶段影响较大,对开花至成熟阶段影响较小。成熟期植株干物质积累量在不同密度下的均值依次为4.50×10^(4)>3.75×10^(4)>6.00×10^(4)>5.25×10^(4)株/hm^(2)。随种植密度的增加单盘粒重逐渐降低,产量逐渐增加。籽仁率在播期5月16日、密度5.25×10^(4)株/hm^(2)处理下达最大,为74.09%;百粒重及产量在播期5月2日、密度6.00×10^(4)株/hm^(2)处理下达最大,分别为8.76g、6859.00kg/hm^(2);单盘粒重在播期5月23日、密度3.75×10^(4)株/hm^(2)处理下达到最大,为138.14g。
Dry matter transfer and yield changes of’T562’sunflower under five sowing dates(25 th April,2 nd May,9 th May,16 th May,and 23 th May)with four planting densities(3.75×10^(4),4.50×10^(4),5.25×10^(4),and 6.00×10^(4) plant/ha)were studied.The results revealed that the sowing dates showed a high impact during the seedling to flowering stage and a low impact during the flowering to mature stage of sunflower.Under different conditions of planting densities,the treatment order of the average dry matter accumulation of plants at mature stage was 4.50×10^(4)>3.75×10^(4)>6.00×10^(4)>5.25×10^(4) plant/ha.The grain weight per disc was decreased gradually and the yield was increased gradually with the increase of planting density.The grain rate reached the maximum(74.09%)at the sowing date of 16 th May when the density was 5.25×10^(4) plant/ha;the 100-seed weight and yield reached the maximum at the sowing date of 2 nd May while the planting density was 6.00×10^(4) plant/ha,and the values were 8.76 g and 6859.00 kg/ha,respectively;the grain weight per disc reached the maximum(138.14 g)at the sowing date of 23 th May when the density was 3.75×10^(4) plant/ha.
作者
赵轩微
赵雅杰
田振东
胡树平
赵榕
任亚宁
包海柱
高聚林
Zhao Xuanwei;Zhao Yajie;Tian Zhendong;Hu Shuping;Zhao Rong;Ren Yaning;Bao Haizhu;Gao Julin(College of Agriculture,Inner Mongolia Agricultural University,Hohhot 010019,Inner Mongolia,China)
出处
《作物杂志》
北大核心
2021年第3期185-189,共5页
Crops
基金
内蒙古农业大学科技成果转化专项资金动植物品种选育(培育)(YZGC2017003)
内蒙古自治区自然科学基金(2019MS03049)
2019年内蒙古“草原英才”工程。
关键词
向日葵
播期
密度
产量
Sunflower
Sowing date
Planting density
Yield
