施肥量对地方优良种质资源改良种玉米农艺性状及产量的影响

Effect of Different Fertilization Rates on Agronomic Characters and Yield of Maize Improved by Local Excellent Germplasm Resources

以“寿阳小黄”“和顺小玉茭”“榆社黄粒玉米”“左权黄白粒”等优良地方品种的玉米杂交种为实验材料,分析不同施肥量对杂交种玉米苗期及拔节期株高和茎粗、成熟期株高和穗位高度及玉米产量的影响。研究结果表明,施用有机肥对玉米各时期的株高、茎粗、穗位高均有明显影响,对玉米最终产量的影响也十分显著,施肥组较不施肥组的产量平均增幅在50%以上,225 kg/hm^(2)的有机肥施肥量为最优施肥量。

Maize hybrids of excellent local varieties such as the existing local germplasm“Shouyang Xiaohuang”,“Heshun Xiaoyujiao”,“Yushe Yellow Kernel Maize”and“Zuoquan Yellow White Kernel”were used as experimental materials.The effects of different fertilization rates on plant height and stem diameter at seedling and jointing stages,plant height and ear height at maturity,and yield of hybrid maize were analyzed.The results show that the application of organic fertilizer has significant effects on plant height,stem diameter,ear height at each stage of maize,and also on the final yield of maize.The average yield increase of the fertilization group is more than 50%compared with the non fertilization group.225 kg/hm^(2)of organic fertilizer is the optimal amount.