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以郑单958、浚单20为试验材料,设定60 000株/hm2、75 000株/hm2两个密度,研究夏玉米产量与产量构成因素、干物质生产、叶面积指数发展动态、光合作用等,探讨喷施Cabrio和Opera试剂对夏玉米植株发育及产量的影响。结果表明,喷施药剂Cabrio和Opera后玉米产量增加,浚单20较对照分别增产6.7%和4.0%;郑单958较对照分别增产5.3%和4.2%。喷施药剂Cabrio和Opera的处理生育后期下部叶片衰老缓慢,吐丝期至成熟期LAI下降幅度较小,单株干物重和单位面积干物质积累增强,光合性能增强,光合速率提高。
Taking Zhengdan 958 and Xundan 20 as experimental materials, two densities of 60 000 plants / hm2 and 75 000 plants / hm2 were set up to study the factors affecting the yield and yield of summer maize, the development of dry matter production and leaf area index, photosynthesis The effects of spraying Cabrio and Opera reagents on plant development and yield of summer maize were discussed. The results showed that the yield of corn after spraying Cabrio and Opera was increased, Xundan 20 increased by 6.7% and 4.0% respectively compared with the control; Zhengdan 958 increased by 5.3% and 4.2% respectively compared with the control. The treatment with Cabrio and Opera at the late growth stage showed slow leaf senescence. The LAI decreased slowly from silking stage to mature stage. The dry matter weight per unit area and dry matter accumulation per plant area increased, photosynthetic capacity and photosynthetic rate increased.