摘要
该试验以冬小麦品种‘藏冬25’为试验材料,研究不同时期喷施"黑汁"对冬小麦根系生长发育及产量变化的影响。通过田间鉴定和统计分析,结果表明:喷施"黑汁"对冬小麦总根数和新根发生量的影响效果并不明显。根长、根重、根体积等指标随着喷施次数的增加,总体表现先降低后上升的趋势,根长和根体积之间相关系数0. 9564,达到显著性相关(P=0. 044 <0. 05)。冬小麦产量变化与根系生长变化之间没有直接的相关性,除根长以外,新根数量、根体积等都与产量之间呈负相关关系。根长对冬小麦分蘖率的提高和产量的增加贡献率要大于新根数的贡献率。由此可得,喷施"黑汁"可以增强冬小麦抗逆性、降低越冬死苗率,有利于促进小麦根系的伸长生长,提高小麦的抗旱性,促进籽粒干物质积累,增加千粒重,从而增加冬小麦每667 m^2的平均产量。
The experiment was conducted to study the effects of spraying black juice between root growth and yield of winter wheat variety‘Zangdong 25’in different periods. The field identification and statistical analysis were adopted. The results showed that spraying‘black juice’had no obvious effect on the total root number and new root occurrence of winter wheat. The indexes of root length,root weight and root volume decreased first and then increased with the increase of spraying times. The correlation coefficient between root length and root volume was 0. 9564,which reached significant correlation( P = 0. 044 < 0. 05). There is no direct correlation between yield change and root growth change of winter wheat. Except root length,the number and volume of new roots are negatively correlated with yield. The contribution rate of root length to the increase of tillering rate and yield of winter wheat was greater than that of new roots.【Conclusion】Spraying‘black juice’can enhance the stress resistance of winter wheat,reduce the rate of seedling death in winter,promote the elongation of wheat root system,improve the drought resistance of wheat,promote the accumulation of dry matter in grains,increase 1000-grain weight,and thus increase the average yield per 667 m^2 of winter wheat.
作者
魏迎春
王菊花
张永鹏
王兰
梁艳华
范瑞英
于明寨
范春捆
WEI Ying-chun;WANG Ju-hua;ZHANG Yong-peng;WANG Lan;LIANG Yan-hua;FAN Rui-ying;YU Ming-zhai;FAN Chun-kun(Institute of Agriculture,Academy of Agriculture and Animai Husbandry,Tibet Lhasa 850032,China)
出处
《西藏农业科技》
2019年第3期8-10,共3页
Tibet Journal of Agricultural Sciences
关键词
黑汁
冬小麦
根系
产量
Black juice
Winter wheat
Root
Yield
