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油菜不同种植密度及氮肥水平试验研究结果表明,在同一施氮量条件下,随着种植密度的增加,油菜单株分枝个数减少,成熟期相应提早,有利于机械化收获;在不同的施氮量处理下,密度在增产中起关键作用,且不同施氮量对种植密度要求不一样。在沙洋县当地,小区施尿素1.00 kg、磷肥1.90 kg、钾肥0.25 kg时,密度在37.5万~42.0万株/hm2时,油菜的各种性状均适宜机械化收获。
The experimental results of different planting density and nitrogen fertilizer level of rape showed that with the increasing of planting density, the number of branches of rapeseed decreased and the maturity stage was earlier, which was conducive to mechanized harvesting under the same nitrogen application rate. Under the nitrogen treatment, the density plays a key role in increasing the yield, and the different nitrogen application rates have different requirements on the planting density. In Shayang County, local community, the plot of urea fertilizer 1.00 kg, phosphate fertilizer 1.90 kg, potassium 0.25 kg, the density of 375,000 ~ 420,000 / hm2, rape various traits are suitable for mechanized harvesting.