腐殖酸和腐殖酸有机肥对玉米产量及粗蛋白质含量的影响

通过小区试验,研究了不施肥、施化肥、风化煤与化肥配施、腐殖酸有机肥施用对玉米干物质积累、籽粒产量、粗蛋白质含量、氮磷肥偏生产力以及氮磷肥农学效率的影响。结果表明,不同施肥能显著提高玉米干物质积累、籽粒产量及粗蛋白含量。风化煤与化肥配施、腐殖酸有机肥施用较单施化肥显著提高了玉米根系干质量、秸秆质量、行粒数、每穗粒数、籽粒产量、粗蛋白质含量、氮磷肥偏生产力以及氮磷肥农学效率;腐殖酸有机肥较单施化肥显著提高了玉米穗轴质量、穗行数,对玉米百粒质量影响不显著。

Effects of Humic Organic Fertilizer on the Yield and Crude Protein Content of Maize

The effect of different fertilization, including no fertilizer, fertilizer, fertilizer combined with weathering coal and humic or- ganic fertilizer on maize dry matter accumulation, maize yield, its crude protein content, partial productivity and agronomic efficiency of nitrogen and phosphorus were studied by a plot experiment. The results showed that dry matter accumulation, yield and crude protein content of maize were significantly improved by different fertilization. Compared with fertilizer, fertilizer combined with weathering coal, humic organic fertilizer not only increased the weights of root and straw significantly, but also increased the numbers of grains per row and per spike, the yield of maize and its crude protein content. In addition, partial productivity and agronomic efficiency of nitrogen and phosphorus were also improved. Compared with fertilizer, the humic acid organic fertilizer significantly increased maize cob weight, the number of rows per spike. However, it had no significant effect on maize hundred-grain weight.