摘要
以玉米品种中单808为材料,通过盆栽试验,研究不同调亏叶龄、调亏程度和调亏时间对玉米农艺性状及干物质积累的影响。结果表明：在不同叶龄期对中单808进行调亏灌溉,复水10 d时展四叶和展五叶的株高、茎粗及单株叶面积均较大,到了大喇叭口期和抽雄吐丝期展三叶和展四叶显著高于展五叶处理;调亏程度为55%~65%的株高、茎粗及单株叶面积均显著高于调亏程度为40%~50%的处理;持续12 d的调亏灌溉有助于玉米株高、茎粗、叶面积的生长;植株各部位和整株干物重均以展4叶期＋调亏程度55%~65%＋调亏持续12 d的处理最大。因此,中单808在展4叶期进行为期12 d的调亏程度为55%~65%（土壤水分占田间最大持水量的55%~65%）的调亏灌溉组合效应较好。
Taking Zhongdan808 as material, by pot experiment, this paper studied the effects of different regulated deficit irrigation（RDI） leaf age, RDI degree, RDI time on agronomic traits and dry matter accumulation of maize. Results showed that at different leaf age with RDI, plant height, stem diameter and leaf area per plant in four leaf age and five leaf age were bigger than those in three leaf age after 10 days re-watering, these traits in three leaf age and four leaf age were significantly higher than those in five leaf age at huge bell stage and spinning tasseling stage. Plant height, stem diameter, leaf area per plant by RDI at 55%-65% were significantly higher than those by RDI at 40%-50%. Lasting 12 days of RDI developed the growth of maize plant height, stem diameter and leaf area. Dry matter weight of each part and whole plant both were the largest in the combination of 4 leaf stage, RDI at 55%-65% and RDI for 12 days processing. Therefore, Zhongdan 808 grew well in the combination of 4 leaf stage, RDI at 55%-65% and RDI for 12 days processing.
出处
《广东农业科学》
CAS
2015年第24期31-35,共5页
Guangdong Agricultural Sciences
基金
贵州省自然科学基金(黔科合J字[2011]2138号)
贵州不同生态区玉米农艺节水抗旱技术集成与示范(黔科合NY[2014]3016号)
国家公益性行业(农业)科研专项(201503127)
国家科技支撑计划项目(2012BAD40B03)
贵州省作物学省级重点学科建设计划项目(黔学位合字ZDXK[2014]8号)
贵州大学研究生创新基金(研农2015044)
关键词
调亏灌溉
玉米
农艺性状
干物质积累
regulated deficit irrigation（RDI）
maize
agronomic trait
dry matter accumulation
