不同底墒处理对夏玉米生长发育及产量的影响

Effects of Different Soil Moisture Before Sowing on Growth and Development and Yield of Summer Maize

研究不同底墒处理下夏玉米生长发育与产量特性,探讨不同品种的抗旱性。以8个河南省主栽夏玉米品种为材料,比较池栽条件下底墒对玉米株高、干物质、根系及产量等指标的影响。结果表明,半量底墒处理条件下,‘郑单958’和‘洛玉8号’的产量及植株生物学性状指标减小幅度较小,‘蠡玉16’、‘中科4号’和‘伟科702’的减幅较大,而‘浚单20’、‘先玉335’和‘隆平206’的减幅处于中间水平。‘郑单958’和‘洛玉8号’抗旱性较强,‘蠡玉16’、‘中科4号’和‘伟科702’抗旱性较弱,而‘浚单20’、‘先玉335’和‘隆平206’等品种抗旱性中等。

The different soil moisture before sowing on growth and development and yield were studied, and the drought resistance of different cuhivars was explored. Taking 8 main summer maize cuhivars in Henan as the test materials, effects of soil moisture before sowing on plant height, dry matter, roots and yield were compared under pool cultivation. The results showed that under the treatment of half dose soil moisture before sowing, the decrease of yield and plant biological traits index of ＇Zhengdan958＇ and ＇Luoyu8＇ ＇ was smaller, the decrease of that of ＇Liyul6＇, ＇Zhongke4＇ and ＇WeikeT02＇ was bigger, but the decrease of that of ＇Xundan20＇, ＇Xianyu335＇ and ＇Longping206＇ was medium. The drought resistance of ＇Zhengdan958＇ and ＇ Luoyu8＇ was strong, the drought resistance of drought resistance of ＇ Xundan20＇, ＇ Xianyu335＇ ＇Liyul6＇, ＇Zhongke4＇ and ＇Weike702＇ was weak, and the and ＇ Longping206＇ was medium.