【摘要】 研究沼液作追肥对制种玉米产量及土壤化学性质的影响。文章以制种玉米为试验材料,采用计随机区组试验设,研究沼液追肥对制种玉米经济性状、产量、土壤化学性质、经济效益的影响。结果表明,T1(沼液1500kg·hm-2+142.50 kg N·hm-2)有机质含量最高,与其他处理间达到了显著差异;T1的土壤速效钾含量最高,达12.67 g·kg-1,与CK(150 kg N·hm-2),T2(沼液22500 kg·hm-2+138.75 kg N·hm-2)间达到了显著差异;土壤速效磷含量,土壤p H值,土壤电导率差异不显著;不同处理对穗行数,行粒数、穗粒重的影响差异不显著,T3(沼液30000 kg·hm-2+135 kg N·hm-2)千粒重最高,与CK,T2,T4(沼液37500 kg·hm-2+131.25 kg N·hm-2)间差异达到了显著水平;T2的产量,产值,经济效益最高。沼液做追肥可提高产量,降低生产成本,但必须和化肥配合施用。更多还原

【Abstract】 Effect of biogas slurry as topdressing fertilizer on yield of hybrid seed maize and soil properties were studied in this paper. Hybrid seed maize were planted with randomized block,and it was determined and analyzed for its economic characters and benefit,soil chemical properties,and yield. The results showed that the soil of treatment T1( 1500 kg biogas slurry·hm- 2+ 142. 50 kg N·hm- 2) had the highest organic matter content,which had a significant difference from other treatments. And it also had the highest soil available potassium,reaching up to 12. 67 g·kg- 1,which was significant different from treatment T2( 22500 kg biogas slurry·hm- 2+ 138. 75 kg N·hm- 2) and CK( 150 kg N·hm- 2). The soil available P,p H,conductivity of T1 had no significant difference from other treatment. The line number,grain number of each line,and grain weight per ear had no significant difference among treatments. Treatment T3( 30000 kg biogas slurry·hm- 2+ 135 kg N·hm- 2) had the highest 1000-grain weight,which had significant difference from CK,T2,and T4( 37500 kg biogas slurry·hm- 2+ 131. 25 kg N·hm- 2). Treatment T2 had the best yield and production value. All these showed that applying biogas slurry as topdressing fertilizer could improv yield and reduce production cost but should combine with chemical fertilizer.更多还原