不同氮肥水平下喷施木醋液对水稻产量和食味品质的影响

Effects of spraying wood vinegar on yield and taste quality of rice under different nitrogen levels

以优质食味常规籼稻品种洋硒早和常规粳稻鄂香2号为材料,在4个氮肥施用水平(0、50、100、200 kg/hm^(2))条件下,设置喷施和不喷施木醋液,研究在不同施氮水平下施用木醋液对水稻产量和食味品质的影响。结果显示:与不喷施木醋液相比,不同施氮条件下喷施木醋液均有显著的增产效果,其中喷施木醋液对常规粳稻鄂香2号的增产效果更为明显,且在低氮肥水平下喷施木醋液的增产效果更为显著;不同施氮条件下喷施木醋液可显著改善稻米的加工品质,对糙米率和精米率有明显提升作用;不同施氮条件下喷施木醋液还有利于改善稻米的蒸煮食味品质,可显著提高稻米的消减值,降低崩解值,进而提升稻米的食味值,且在低氮肥水平下喷施木醋液对稻米食味品质的改善作用更为明显。结果表明,喷施木醋液,尤其是低氮条件下喷施木醋液可显著提高水稻产量并改善稻米食味品质。

Two conventional rice cultivars with good taste quality,indica/xian rice Yangxizao and japonica/geng rice Exiang 2,were used to study the effects of wood vinegar and different nitrogen application on the yield and eating quality of rice.Under the conditions of 4 nitrogen fertilizer application levels(0,50,100,200 kg/hm^(2)),spraying and not spraying wood vinegar were set.The results showed that comparing with non-application of wood vinegar,the wood vinegar application significantly increased yield under different nitrogen application conditions.Spraying wood vinegar significantly increased the yield of conventional japonica geng rice Exiang 2,especially under low nitrogen level.Spraying wood vinegar under different nitrogen application conditions significantly improved the processing quality of rice,and had a significant effect on the rate of brown rice and milled rice.It was also beneficial to improve the cooking and eating quality of rice,which can significantly increase the reduction value of rice,reduce the disintegration value,and then increase the taste value of rice.The effect of vinegar on the eating quality of rice was more obvious when the wood vinegar applied under low nitrogen level.