不同施氮量对设施草莓生长状况的影响

为了完善塔城地区的草莓施肥制度,以红颜草莓为研究对象,在第九师团结农场温室开展不同施氮量对草莓植物学性状和产量性状等指标影响的研究。结果表明:滴灌草莓各项指标基本上随着施氮量增加而呈现单峰抛物线形状,氮素效应回归方程为:y=8 697.7+181.99N-0.790 4N~2,R~2=0.972 2,从水肥高效角度考虑,对氮素效益方程求导,得出115.11%为最佳施氮量,此时草莓理论产量为19 172.85 kg,在第九师设施草莓生产上建议施用氮量为93 kg/hm~2,同时严控磷肥,增施钾肥,可以实现设施草莓优质高产以及较好的经济效益。

Effects of Different Nitrogen Application Rates on the Growth of Strawberry

Abstract: In order to improve the fertilization system of strawberry in Tacheng area, the effects of different nitrogen application rates on the botanical and yield traits of strawberry were studied in the greenhouse of Tuanjie farm of the ninth division. The results showed that the indexes of strawberry under drip irrigation basically showed a single peak parabolic shape with the increase of nitrogen application rate. The regression equation of nitrogen effect was y =8 697.7+181.99N -0.790 4N2, R 2=0.972 2. By deriving the nitrogen benefit equation, 115.11% was the best nitrogen application rate, and the theoretical yield of strawberry was 19 172.85 kg. It was suggested that the amount of nitrogen should be 93 kg/hm2, and the phosphorus fertilizer should be strictly controlled and the potassium fertilizer should be increased. It could achieve good quality and high yield of strawberry in greenhouse, so as to achieve better economic benefits.