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甘兰型油菜对微量元素硼肥非常敏感。土壤缺硼可以引起萎缩不实病(又称花而不实病)的大发生,减产极为严重。我所1977年在缺硼土壤(0.02 ppm)上作的油菜施硼试验结果表明,亩施硼0.5—2斤作底肥,亩产油菜籽247.2—275斤,而未施硼的对照区亩产仅19斤,增产1301-1447％,效果极其显著。为了查明甘兰型油菜施用硼肥有无后效及后效多长,我们特将1977年《施用硼肥防治甘兰型油菜萎缩不实病试验》收后划作裂区,作长期定位施硼观察,为经济合理施用硼肥提供科学依据。
Brassica napus is very sensitive to trace element boron fertilizer. Soil boron deficiency can cause atrophy is not real disease (also known as flowers and not real disease) of the big, very serious production cuts. Our 1977 boron deficient soil (0.02 ppm) on rape boron application test results show that 0.5-2 kg per acre boron as a base fertilizer, per acre 247.2-275 kg of rapeseed, and no boron in the control area mu Only 19 pounds, an increase of 1301-1447%, the effect is extremely significant. In order to ascertain the availability and the aftereffect of boron fertilizer applied in Brassica napus, we plan to use the boron fertilizers in 1977, Boron observation, to provide a scientific basis for the economic and rational use of boron fertilizer.