青稞专用控失肥在西藏青稞上的应用研究

Application of Special Loss-control Fertilizer in the Tibetan Highland Darley

采用田间小区试验,研究“珠峰4000”青稞专用控失肥对青稞籽粒产量、养分吸收和肥料利用率的影响。结果表明:在试验设置施肥量范围内,施用青稞专用控失肥青稞籽粒产量明显增加,且籽粒产量随施肥量的增加呈上升趋势;养分累积量与籽粒产量的趋势一致,而肥料利用率却呈下降趋势。施肥量为900 kg/hm^(2)时产量最高,达到4682.3 kg/hm^(2),增产幅度达到150.7%。有效穗、穗粒数、结实率和千粒质量都明显增加,而有效穗和穗粒数对籽粒产量影响较大。

Field experiments were conducted to investigate the effects of loss-control fertilizer“zhufeng 4000”on the yield,nutrient absorption and fertilizer efficiency of highland barley.The results showed that the grain yield of highland barley increased significantly with the application of losscontrol of fertilizer.In the range of fertilization rates in the experiment,the grain yield increased with the increase of fertilizer application rate.Similar trend was observed for the nutrient accumulation,while a decreased trend for the fertilizer utilization efficiency.The grain yield was increased by 150.7%,with the highest value of 4682.3 kg/hm^(2) at the fertilizer rate of 900 kg/hm^(2).The effective panicle number,grain number per panicle,seed setting rate and 1000-grain weight increased obviously,and effective panicle number and grain number per panicle had great influence for grain yield.