缓释肥对烟后移栽油菜化肥利用效率和产量的影响

Effects of Slow-Release Fertilizers on Yield and Fertilizer Utilization Efficiency of Transplanted Rapeseed after Tobacco

以农民习惯施肥和不施肥作为对照,通过大田试验研究分析了"宜施壮"油菜配方肥在烟后育苗移栽油菜上的应用效果。结果表明,施肥后油菜籽粒、角壳和茎秆产量显著提高。"宜施壮"油菜配方肥较农民习惯施肥减少了24.2%、50.7%和25.9%的N、P_2O_5和K_2O使用量,表观利用率分别达到36.9%、22.6%和177.6%,较习惯施肥提高16.5%、46.5%和28.4%;农学效率分别达到11.3、40.5和35.4 kg/kg,较农民习惯施肥提高4.6%、61.4%和7.3%;产量增加3.5%,节约成本7.55%。但尚可适当提高P_2O_5含量,增加B素营养,或在使用中建议农民配合施用硼肥。

The application effect of rapeseed specific fertilizer ＇ Yishizhuang＇ on transplanted rapeseed after tobacco was analyzed by field experiment, in which the traditional fertilization and no fertilization were taken as the control. The study showed that ＇ Yishizhuang＇ significantly promoted the yield of rapeseed, rape siliqua and rape stem, reduced the N, P2O5, K2O application rate by 24.2 %, 50.7 % , 25. 9 % ,respectively. The apparent digestibility of N,P2O5 and K2O was 36.9 % ,22.6 % and 177.6 % ,which had increased by 16.5 %, 46.5 % and 28.4 %, respectively. The agronomic efficiency was 11.3,40.5 and 35.4 kg/kg, which improved by 4.6 %, 61.4 % and 7. 3 % ,respectively, compared with the traditional fertilization. Rapeseed specific fertilizer ＇ Yishizhuang＇ increased the yield by 3.5 % and saved cost by 7.55 % in transplanted rape after tobacco. We suggested improving the P2O5 contents and boric fertilizer in use of the ＇ Yish- izhuang＇.