S_(3307)和KT对春玉米叶片碳代谢及产量的影响  

Effects of S_(3307) and KT on Carbon Metabolism of Maize Leaves and Yield

作　　者：李东[1] 郑殿峰[1] 冯乃杰[1] 赵晶晶[1] 张盼盼[1] 蔡光蓉[1] 赵海东[1] 周行[1] 齐德强[1] Li Dong Zheng Dianfeng Feng Naijie Zhao Jingjing Zhang Panpan Cai Guangrong Zhao Haidong Zhou Hang Qi Deqiang(The Chemical Control Laboratory/College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing Heilongjiang 163319)

机构地区：[1]黑龙江八一农垦大学农学院/化控实验室,黑龙江大庆163319

出　　处：《中国农学通报》2017年第7期16-21,共6页Chinese Agricultural Science Bulletin

基　　金：黑龙江农垦总局项目"高效经济作物产业化创新与示范"(201401);国家科技支撑计划项目"北方突发性灾害应急防控技术集成与示范"(2012BAD20B04)

摘　　要：探讨叶面喷施烯效唑(S_(3307))和激动素(KT)对玉米叶片碳代谢及产量的影响,为S_(3307)和KT在玉米生产上的应用提供科学依据。大田栽培条件下,以‘德美亚1’和‘德美亚2’为试验材料,于玉米7叶期喷施S_(3307)和KT,喷施清水为对照,研究其对玉米叶片碳代谢及产量的影响。结果表明:S_(3307)和KT均显著增加了2个品种的穗重、粒重、穗行数、行粒数和单粒重,最终提高了玉米籽粒产量。其中,KT对‘德美亚1’产量的调控效果较好,S_(3307)对‘德美亚2’产量的调控效果较好。喷施调节剂后第21~30天,2种调节剂均降低了叶片淀粉含量和淀粉酶活性,‘德美亚1’的叶片淀粉含量下降幅度为0.16%~31.10%,淀粉酶活性下降幅度为7.58%~45.83%;‘德美亚2’的叶片淀粉含量下降幅度为2.68%~42.01%,淀粉酶活性的下降幅度为3.97%~39.82%。喷施调节剂后第21天,2个品种叶片蔗糖和可溶性糖含量的大小依序为KT>S_(3307)>CK,‘德美亚1’的2个处理蔗糖和可溶性糖含量比CK分别增加84.64%、31.28%、67.38%和52.74%,‘德美亚2’的2个处理蔗糖和可溶性糖含量比CK分别增加14.21%、3.92%、49.34%和37.50%。2种调节剂均显著促进了生育后期玉米叶片的生理活性,延缓了叶片衰老,进而提高了玉米产量。The effects of foliar spraying uniconazole （S3307） and kinetin （KT） on carbon metabolism of maize leaves and yield were studied in order to provide theoretical foundation for maize production. In the filed experiment, using ‘Demeiya 1＇ and‘Demeiya 2＇ as test materials, S3307 and KT was sprayed at 7 leaves expansion stage, water was sprayed as control. The effects on the carbon metabolism of maize leaves and the yield were studied. The results showed that S3307 and KT increased panicle weight, grain weight, number of rows, kernels per row and single grain weight, and then raised the grain yield. The regulating effect of KT treatment on the yield of ‘Demeiya 1＇ was better than that of S3307 and the regulating effect of S3307 treatment on the yield of ‘Demeiya 2＇ was better than that of KT. After 21-30 days of spraying regulators, the two regulators decreased the starch content and starch amylase activity. The starch content and amylase activity of ‘Demeiya 1＇ was decreased by the range of 0.16%-31.10% and 7.58%-45.83%, respectively. The starch content and amylase activity of ＇Demeiya 2＇ was decreased by the range of 2.68%-42.01% and 3.97%-39.82%, respectively. After 21 days of spraying regulators, the order of sucrose and soluble sugar contents in leaves of the two varieties was KT〉S3307〉CK. Compared with the control, the sucrose and soluble sugar content of ‘Demeiyal＇ increased by 84.64%, 31.28%, 67.38% and 52.74% by foliar spraying KT and S33o7, respectively; the sucrose and soluble sugar content of ‘Demeiya2＇ increased by 14.21%, 3.92%, 49.34% and 37.50% by foliar spraying KT and S3307, respectively. S3307 and KT could significantly enhance physiological activities and delay the senescence of maize leaves during middle-late growth stages. Thereby, they were effective to increase the yield of maize.

关 键 词：玉米 烯效唑 激动素 叶片 产量 

分 类 号：S522[农业科学—作物学]