北方白菜型冬油菜对硼肥的需求分析

The Demand Analysis of Boron Fertilizer of Winter Rapeseed(B.campestris L)in North of China

为了研究我国北方白菜型冬油菜对硼肥的需求量,在大田情况下,对白菜型冬油菜叶面喷施不同浓度的硼肥及不同生育时期喷施硼肥,观察其可溶性糖等生理指标及产量的变化情况。结果表明,蕾薹期是白菜型冬油菜对硼素最敏感时期;施用硼肥有助于改善白菜型冬油菜的经济性状,提高冬油菜产量;不同浓度的硼肥对冬油菜均有一定的增产作用,以硼浓度0.20 mol/L增产效果最好。

The relationships between the changes of physiological indices,yield and economical characters of winter rapeseed(B.campestris)in north arid-cold areas under different concentrations of boron fertilizer and different growth periods of boron fertilizer treatment were studied.The resut showed that boron fertilizer was better for economical characters of winter rapeseed,and could enhance the yield.The best concentration was 0.20 mol/L and the best growth period was budding moss.