华北农学报2016，Vol.31Issue(5)：167-173,7.DOI:10.7668/hbnxb.2016.05.025
干旱条件下籽粒大小与播种深度对夏玉米幼苗生长及产量的影响
Effect of Grain Size and Sowing Depth on Seedling Growth and Yield of Summer Maize in Drought Condition
摘要
Abstract
In order to explore the effect of grain size and sowing depth on emergence and seedling growth,de-termining suitable grain size and sowing depth in mechanization of summer maize production of Southwest Hilly Are-a.In the split-plot design,using Zhenghong 505 as the test material,3 kinds of grain size was assigned to the main plot,and 3 sowing depth (2,6,1 0 cm)to the subplot,emergence rate of maize,seedling quality,yield and yield components have been investigated in drought condition.The results showed that compared with small grain,large grain had higher emergence rate,the seedling was more haleness and grew better in drought,and there was a certain effect of increasing yield ultimately;Shallow sowing(2 cm)was conducive to the emergence,and the growth vigor of the seedlings of 6 cm sowing depth was best just when emerging,then the 1 0 cm depth of the seedling grew gradual-ly strong,and obviously better at the 5 leaf period(large and medium grain)-7 leaf period(small grain)than shal-low sowing treatment,which also showed a certain increase in yield.Therefore,in the dry land or dry season,choo-sing large grain and suitable sowing depth in maize production can effectively better sthong seedlings,improve the resistance of drought,and achieve the purpose of producing income insurance.关键词
玉米/播深/幼苗/抗旱/产量Key words
Maize/Sowing depth/Seedling/Drought/Yield分类
农业科技引用本文复制引用
程秋博,李孝东,孔凡磊,张頔,王兴龙,郭翔,袁继超..干旱条件下籽粒大小与播种深度对夏玉米幼苗生长及产量的影响[J].华北农学报,2016,31(5):167-173,7.基金项目
国家科技支撑计划项目（2012BAD04B13）；农业部行业专项 （）
