低丘陵红壤土直播油菜施硼技术初探

为了了解低丘陵红壤土油菜直播模式硼肥合理施用量，本研究通过连续两季大田试验，设置施肥量为0kg/公顷、4.5kg/公顷、7.5kg/公顷、10.5kg/公顷四个处理，研究不同施硼量对油菜农艺性状和产量构成因子的影响。结果表明：施硼后油菜农艺性状和产量构成因子均较不施硼有所提高，第一季油菜产量随施硼量的增加先升高后趋于平缓，第二季油菜产量随施硼量的增加先增加后降低，施硼量在7.5kg/公顷时产量和净收入增加最高。根据本试验结果，低丘陵红壤直播油菜推荐施硼量为7.5kg/公顷，N为150kg/公顷、P2O5 75kg/公顷、K2O 120kg/公顷。

A preliminary study on Boron fertilizer application technology of Live-rape in Low-hill red Loam

In order to understand the reasonable boron fertilizer rates of Live-rape in Low-hill red Loam, the effect of different boron fertilizer rates on rape agronomic characteristics and yield composition factors in two consecutive seasons field test were studied, with four boron rates that was 0kg/hm2,4.5kg/hm2,7.5kg/hm2, 10.5kg/hm2. The results show that the agronomic characteristics and yield composition factors of rapeseed were improved after applied boron fertilizer than non-boron. With boron fertilizer rates increase, rape production increased and then flattened in the first season; it increased and then decreased in the second season. Rape reached the highest yield and profit with the boron fertilizer rate of 7.5kg/hm2. Therefore, the fertilizer rate of Live-rape in Low-hill red Loam is recommended that boron is 7.5kg/hm2, N is 150kg/hm2, P2O5 is 75kg/hm2, K2O is 120kg/hm2.