The effects of boron and silicon fertilizers with reducing the rates of N,P,K fertilizers on the growth, yield and disease resistance of rapeseed were studied in Shayang county,major production area of Hubei province,form 2016 to 2017. The results showed that,compared with CK (only applying N,P,K fertilizers),applying boron and silicon fertilizers solely or combined could promote the vegetative growth and increase the yield of rapeseed, the yield increased by 8.4% to 18.9%. Besides,applying boron and silicon fertilizers could decrease the Sclerotinia disease of rapeseed by 11.4 to 14.9 percentage points. Compared with CK,applying boron and silicon combined with reducing 10% of N,P,K fertilizers could not affect the growth and yield of rapeseed,however,reducing 20% of N,P,K fertilizers not only affected the growth, but also decreased the 10.4% of yield. In a word,when applying boron and silicon fertilizers, the rates of N,P,K fertilizers for rapeseed could be reduced by 10%.%2016-2017年在湖北省稻油轮作主产区荆门市沙洋县进行了施用硼、硅肥并减施氮、磷、钾肥对油菜(Brassica napus L.)生长、产量和抗病性影响的田间试验.结果表明,与只施用氮、磷、钾肥的对照相比,单施硼、硅肥或硼、硅肥配合施用对油菜的营养生长和产量构成因子均有明显的促进作用,并显著增加油菜子粒产量,平均增产8.4%~18.9%,其中硼、硅配合施用增产效果最显著;硼和硅对油菜菌核病的发生有较明显的抑制或减轻作用,发病率下降11.4~14.9个百分点;硼、硅肥配合施用并减施10%氮、磷、钾肥的油菜产量与对照持平,但减施20%氮、磷、钾肥,其生长和产量明显受阻,子粒减产10.4%,由此可知,油菜配合施用硼肥和硅肥可以替代10%氮、磷、钾肥.
展开▼
