河北省唐山地区春玉米产量的土壤养分限制因子研究  

Investigation of Restrict Yield Nutrient of Spring Corn in Tangshan in Hebei Province

作　　者：冯自军[1] 王素华[1] 张树明[1] 张作新[1] 

机构地区：[1]唐山市农业局土壤肥料站,河北唐山063000

出　　处：《中国农学通报》2009年第23期291-294,共4页Chinese Agricultural Science Bulletin

摘　　要：研究唐山地区春玉米产量的土壤养分限制因子。开展田间小区缺素试验(不施肥、全素、缺氮、缺磷、缺钾、缺铜、缺铁、缺锰、缺锌、缺钼、缺硼11个处理,每个处理3次重复),考察不同小区春玉米产量构成因素及其产量。缺钾、缺锌、缺铁施肥处理对春玉米产量影响较大,与全素处理相比,各处理的穗粒数分别减少29、24、23个,相对产量分别降低11.1%、7.9%、6.6%,差异均达到显著水平。钾、锌、铁主要通过减少春玉米的穗粒数而影响春玉米产量,是春玉米产量的主要土壤养分限制因子。The effect of constituent elements of the yield on spring corn and its restrict yield nutrient in Tang- shan was studied. Field experiment was used in the investigation, and the biological yield and its constituent elements have been tested in this experiment. There were 11 treatments in the experiment, such as CK, OPT, -N, -P, -K, -Cu, -Fe, -Mn, -Zn, -Mo and B, and were 3 repeats in each treatment. The results showed that the yield of spring corn was decreased significantly by the decreasing potassium, zinc or iron in Tangshan. To contrast to optimum fertilization treatment, potassium, zinc, iron treatments reduced grain number per spike of spring eora significantly, the quantity reduced by 29, 24, 23 respectively. In the meantime, their frac- tional yield were also decreased significantly, the ratio reduced by 11.1%, 7.9%, 6.6% respectively. It is clear that potassium, zinc and iron were the restrict yield nutrients of spring corn and they made an impact on yield of spring corn by decreasing grain number per spike mainly.

关 键 词：春玉米 土壤养分 限制因子 

分 类 号：S158.3[农业科学—土壤学]