有机硅水溶缓释肥对小麦-玉米轮作的增产效应

在冀南小麦-玉米轮作区,采用盆栽和大田相结合,通过与施用单质等量常规肥对比,对施用有机硅水溶缓释肥的小麦和玉米的根系和产量及土壤性状进行了比较研究。结果表明,施用有机硅水溶缓释肥的小麦、玉米根系和产量性状明显优于对照常规肥;不同土层土壤毛管孔隙度在每层均有增加,特别是10~20 cm土层内差异极显著;小麦花后旗叶及单株的平均光合速率较对照表现出较大的优势,有机硅水溶缓释肥处理花后旗叶最大光合速率均较对照高,旗叶及整株衰老速度较慢。

The Yield-increasing Effect in Applying Slow-release Organic Silicon Water Soluble Fertilizer on Wheat-corn Rotation

Compared with conventional fertilizer, the slow-release organic silicon water soluble fertilizer concluding the same amount of each elemental was used on wheat-corn rotation in the south of Hebei province. The root system and yields of wheat and corn were analyzed by using pot and in field. At the same time, the soil properties within different layer were studied. The results showed that applied with slow-release application of organic silicon water soluble fertilizer, the character of root system and yield composition of wheat and corn were obviously better than those of with the conventional fertilizer, and the soil capillary porosity were increased in different soil layer, which was especially different significantly within 10~20 cm layer. Average photosynthetic rate of wheat leaf and per plant by treatment showed greater advantage than that by control, as well as higher photosynthetic rate of wheat leaf, and senescence were slower on flag leaf and whole plant.