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试验以先玉335和军单8两玉米品种为材料,进行4个行距处理(分别为70、65、60和50 cm),分别在生育后期测定了叶面积指数、光合速率、叶绿素含量和可溶性蛋白含量。结果表明:70和50 cm行距处理在生育后期较其他处理提高了叶面积指数,保持了较大的绿叶面积,并且叶片叶绿素含量和可溶性蛋白含量均保持在较高水平,叶片衰老延缓,生理活性和光合速率较高。70、50 cm行距较65、60 cm行距在生育后期具有更大的光合生产潜力,有利于高产。
The test was conducted on two maize varieties Xianxian 335 and Wudan 8 for four rows (70, 65, 60 and 50 cm respectively). The leaf area index, photosynthetic rate, chlorophyll content and soluble Protein content. The results showed that the row spacing treatments at 70 and 50 cm increased leaf area index, maintained the larger green leaf area at the later growth stage, maintained the higher chlorophyll content and soluble protein content, delayed leaf senescence and physiological activity And photosynthesis rate is higher. Row spacing of 70,50 cm compared with 65,60 cm Row spacing has greater photosynthetic potential in late growth period, which is favorable for high yield.