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油菜免耕撒直播改变了原来油菜生产翻耕整田,育苗移栽,既化工又化本效益低的状况。但撒直播油菜群体与个体的矛盾比较突出,为使油菜个体生长健壮,群体协调合理,达到单位面积增产、增收、增效益的目的,1998年冬我们进行了免耕撒直播油菜密度试验。现将试验结果报告如下。1 材料与方法试验田座落在三山乡海陆塘畈,前作为晚稻,土质属夜潮泥田,灌排灵通,肥力中等。供试
Rape no-tillage changed the original rape rapeseed production of the whole field, transplanted seedlings, both chemical and chemical benefits of the low-cost situation. However, the rapeseed live rape community and individual contradictions are more prominent, in order to make rape individual growth robust, coordinated and reasonable groups to achieve the unit area of ?? increase production, income, increase efficiency purposes, we conducted winter 1998 no-tillage broadcast rapeseed density test. The test results are reported below. 1 Materials and methods Experimental field is located in Sanshan Township Hailu ponds, as a late rice, soil is a night-tidal muddy fields, irrigation well-connected, medium fertility. For the test