麦豆套作对小麦农艺性状和光合特性的影响

Effects of Wheat and Pea Intercropping on Agronomic Traits and Photosynthetic Characteristics of Wheat

为探讨小麦在不同种植方式下对其农艺性状和光合特性的影响,设置小麦单作2个处理和小麦豌豆套作6个处理(小麦、豌豆的播量比不同)在小麦的孕穗期、抽穗期、灌浆期和成熟期进行茎粗、株高、节间长、黄绿叶分布、光合速率和叶绿素含量的测定。结果表明,小麦豌豆套作比小麦单作更有利于小麦的生长,其中,对于株高和节间长,M1D3(小麦∶豌豆=25∶12)处理效果明显优于其他处理;在小麦茎粗方面,M1D2(小麦∶豌豆=25∶8)和M2D3(小麦∶豌豆=30∶12)处理效果较好;而在黄绿叶分布和叶绿素含量方面,M1D1(小麦∶豌豆=25∶4)和M2D1(小麦∶豌豆=30∶4)处理能使绿叶持续时间长并且增加叶绿素含量;M2D3在所有处理中能提高光合速率。

To investigate the effects of different planting methods on agronomic traits and photosynthetic characteristics of wheat,two treatments of wheat single cropping and six treatments for wheat and pea intercropping were set. Plant height, stem diameter,internode length, yellow green leaf distribution, photosynthetic rate and chlorophyll content of wheat were detemined at booting stage,heading stage, filling stage and maturity stage. The results showed that wheat and pea intercropping was more beneficial to the growth of wheat than wheat single cropping, of which, for plant height and internode length, the effect of M1D3(wheat∶pea=25∶12)treatment was obviously better than that of other treatments. The effect of M1D2(wheat∶pea=25∶8)and M2D3(wheat∶pea=30∶12)on the stem diameter of wheat was better, while in the distribution of yellow and green leaves and the content of chlorophyll, M1D1(wheat∶pea=25∶4)and M2D1(wheat∶pea=30∶4)treatment could keep the green leaves sustained, and increased chlorophyll content.M2D3 treatment could increase photosynthetic rate in all treatments.