摘要
为恰当使用木醋液增产,盆栽和大田种植甘蓝型油菜杂交品种华油杂9号,调查木醋液不同叶面喷施次数、不同施用间隔时间以及不同播期条件下,木醋液对油菜生长与产量的影响.盆栽结果表明,连续和间隔喷施2～4次的木醋液显著提高油菜的总干重29.63%～74.07%.同时连续与间隔喷施4次的木醋液可显著提高油菜的叶面积81.58%～85.65%.大田试验结果表明,苗期、蕾薹期、花期分别喷施1次、2次、3次处理的油菜,最终籽粒产量分别显著提高3.30%、9.52%、11.38%,蛋白含量分别降低2.62%、4.02%、4.68%.3个不同播期喷施木醋液处理的大田产量较对照分别显著提高20.13%、23.25%、13.97%,单株有效角果数分别提高47.29%、61.87%、72.90%.综合分析表明,在油菜生长期间喷施木醋液2～4次,每次间隔5 d以上的促进效果更好.不同播期条件下,木醋液对油菜生长与产量的影响以适期(即10月9日)播种效应更显著.
Abstract
To improve rapeseed yield,Brassica napus hybrid cultivar Huayouza 9 was selected as material,and was planted in pots and fields.Experiments were conducted to investigate the effects of wood vinegar application on seedling growth and seed yield under different foliar spraying times,different application intervals and different growth periods under 3 sowing dates.Results of pot experiments showed that total dry weight of rapeseed was signifi-cantly increased by 29.63%-74.07%when wood vinegar was sprayed for 2 to 4 times continuously and at intervals.At the same time,continuous and interval spraying of wood vinegar for 4 times could significantly increase leaf area by 81.58%-85.65%.Results of field experiments showed that the final seed yield treated by spraying once,twice and three times at seedling stage,bud bolting stage and flowering stage respectively increased by 3.30%,9.52%and 11.38%,and protein content decreased by 2.62%,4.02%and 4.68%,respectively.Compared with control,field yields of 3 different sowing dates sprayed with wood vinegar were increased by 20.13%,23.25%,13.97%,and the number of effective pods per plant increased by 47.29%,61.87%,72.90%,respectively.Comprehensive analysis showed that the promotion effect was better when wood vinegar was sprayed 2 to 4 times during growth period,with an interval of more than 5 days each time.Under different sowing dates,the effect of wood vinegar on rapeseed growth and yield was more significant in the suitable sowing date(on Oct.9th).
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