油菜茎秆连接力的测定  

Research on connection force in stems of rapeseed plant

作　　者：黄震[1] 吴明亮[1,2] 官春云[3] 罗海峰[1,2] 汤楚宙[1,2] 邓平[1] 庞晓远[1] 

机构地区：[1]湖南农业大学工学院,湖南长沙410128 [2]湖南省现代农业装备工程技术研究中心,湖南长沙410128 [3]湖南农业大学油料作物研究所,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2011年第6期678-680,共3页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家科技支撑计划项目(2010BAD01B06);湖南省政府重大专项(湘财农指[2009]84号);湖南省科学技术厅重大专项(2009FJ1006-2);农业部跨越计划项目(农财发[2009]50)

摘　　要：为降低机械化收获过程中的油菜籽粒损失率和脱出物的含杂率,以湖南农业大学油料作物研究所选育的湘杂油1613号油菜为试验对象,研究收获前10 d油菜植株主茎秆与各级分枝、各级茎秆与角果的连接力随生长时间和位置的变化。结果表明:油菜主茎秆与各分枝的连接应力值为4.154～9.156 N/mm2;主茎秆与角果的连接枝应力值为6.747～15.821 N/mm2;各级分枝与角果连接应力值为4.842～15.400 N/mm2。第1、2分枝与角果连接应力值沿植株的生长方向呈下降趋势,第3分枝与角果的连接应力下降趋势不明显。沿植株的生长方向主茎秆与角果连接应力值有明显的变小趋势;至成熟期,主茎秆及分枝与角果连接应力值趋于稳定。In order to reduce the loss rate and impurity rate of rapeseed during the mechanical harvesting process, Xiangzayou 1613, developed by Oilseed Crop Research Institute of Hunan Agricultural University, was used to measure the connection stress between the main stem and the branches, the stem and the pods 10 d before harvest, and the effects of growth time and position on the stress. The results showed that the connection stress between the main stem and branches ranged from 4.154 N/mm^2 to 9.156 N/mm^2, between the main stem and the pods ranged from 6.747 N/mm^2 to15.821N/mm^2, and between the pod and branches of different orders ranged from 4.842 N/mm^2 to 15.400 N/mm^2. On the main stem, the connection stress between the pods and the first and second branches displayed a marked decline along the plant growing direction, but the decline between the pods and the third branch was not obvious. In the plant growing direction （the abscissa axis）, the connection stress between the main stem and the pods declined significantly. In the mature period, there was no change in the connection stress between the pods and the main stem or the branches of different orders.

关 键 词：油菜 茎秆 角果 连接应力 

分 类 号：Q369[生物学—遗传学] S12[农业科学—农业基础科学]