垄沟灌溉种植对玉米光合特性及产量的影响

Effects of Ridge and Furrow Irrigation Planting on PhotosyntheticCharacteristics and Yield of Corn

通过田间试验,以传统种植模式平作为对照,研究了垄沟灌溉种植系统对玉米相对叶绿素质量浓度(SPAD)、光合特性和产量的影响。结果表明,垄沟种植系统能增加玉米的相对叶绿素质量浓度、光合速率和水分利用效率;垄沟系统种植玉米和对照组的光合速率日变化均呈"单峰型"曲线;60cm垄宽的垄沟种植系统的玉米叶片水分利用效率和产量最高。

Taking traditional cropping pattern as CK, the effects of ridge and furrow planting systems on chlorophyll relative content （SPAD）, photosynthetic characteristics and yield were studied based on field experiments. The results indicated that ridge and furrow planting systems could boost corn chlorophyll rel- ative content, photosynthesis rate and water use efficiency. The diurnal change of Pn was a curve with sin- gle peak in ridge and furrow planting systems and the control condition. Leaf＇s water use efficiency and yield of corn in the ridge and furrow planting system with the ridge width of 60 cm were the highest under different treatments.