不同缓控释肥对玉米器官生长·产量的影响

目的]为了研究玉米最佳施肥方式及肥料种类。方法]以郑单958为材料，研究了4种不同缓控释型肥料处理下玉米不同时期干重、产量及肥料贡献率的变化。结果]各处理间玉米净增产量及肥料贡献率均达到0．05水平显著性差异，高低顺序为明泉控释肥〉洋丰复合肥〉杰翔复合肥〉辽中京〉CK。缓控释肥料处理的叶面积系数及不同生育时期植株干重占总重的百分比均高于对照。结论]缓控释肥效果表现最好，其中明泉控释肥表现最突出，其次是洋丰复合肥。

Study on Organ Growth and Yield of Spring- Maize with Different Slow/Controlled Release Fertilizers

Objective ] The research aimed to study the best fertilization method and fertilizer types of corn. Method ] The changes of corn dry weight, yield and fertilizer contribution rate were studied in different periods of Zheng Dan 958 under four different types of slow/controlled release fertilizers. Result] There were significant differences in net increase yield and fertilizer contribution rate between different treatments, and the descending order was Ming Quan release fertilizer 〉 Yang Feng fertilizer 〉 Jie Xiang fertilizer 〉 Liao Zhong Jing fertilizer 〉 CK. The leaf area index and the percentage of plant dry weights in the total weights were higher than those of CK. Conclusion] The slow/controlled release fertilizers was better than CK. Ming Quan release fertilizer was best,followed by Yang Feng fertilizer.