不同缓释复混肥对全膜玉米的生长及产量的影响

Effects of Different Controlled-Release Compounded Fertilizer on the Growth and Yield of Plastic Membrane Mulching Corn

为研究不同缓释肥施用量对全膜玉米的生长及产量的影响,以金穗3号为实验材料,设置缓释肥、玉米专用肥、农民习惯施肥及不施肥(对照)四个处理,采用的方法为单因素随机区组设计,进行田间试验。结果表明:缓释肥处理的玉米籽粒产量最高,较其他处理分别增产5.58%、16.6%、64.4%。缓释肥处理对玉米生物产量的增产效果较其他处理高7.6%、12.5%、32.7%。纯效益而言,缓释肥处理对玉米的经济效益明显高于其他处理,三个处理分别较不施肥(对照)处理高55.7%、41.8%、28%。因此缓释肥对玉米产量有显著的作用,其结果可为缓释复混肥料在青海省玉米全膜覆盖种植中的合理施用提供理论依据。

To explore the effects of different controlled-release compounded fertilizers on plastic membrane mulching corn yield,the experiment set Jinsui 3 as the experimental material,set four treatments respectively controlled-release compounded fertilizer treatment,special corn fertilizer treatment,farmer conventional fertilization treatment and no fertilizer（ control） treatment. The experiment adopted the single factor randomized block design. The results showed that the highest corn grain yield was occurred in controlled-release compounded fertilizer treatment. Compared with other treatments,corn grain yield was increased in controlled-release compounded fertilizer treatment and the increasing rate was 5. 58%,16. 6% and 64. 4%.Compared with other treatments,controlled-release compounded fertilizer treatment had an obvious effect on corn biological yield and the increasing rate was 7. 6%,12. 5% and 32. 7%. In terms of pure benefit,controlled-release compounded fertilizer treatment obtained the highest economical benefit. Compared with no fertilizer（ control） treatment,the increasing rate was 55. 7% 、41. 8% 、28%. So controlled-release compounded fertilizer has significant function on corn yield. The study provides a theoretical basis for rational application of controlled-release compounded fertilizer in plastic membrane mulching corn planting of Qinghai Province.