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甘兰型油菜“花而不实”症在我省发生较为普遍。试验证明,它是由于土壤缺少微量元素硼所引起的营养生理性病害,施用硼肥是防治“花而不实”的最有效措施。为了验证试验结果年份间的重演性;探讨泥灰、猪粪等农家肥料防治“花而不实”的效果;硼肥的经济用量的方法以及白菜型品种喷硼的增产效果等,在1974年冬田间试验基础上,1975年冬又进一步做了田间试验。试验情况如下:
Brassica napus “flower and not real” disease occurs more commonly in our province. Tests show that it is due to the lack of trace elements in soil boron caused by nutritional and physiological diseases, the application of boron is the prevention and treatment of “flowers and not real” the most effective measures. In order to verify the reproducibility of the test results between years; to explore the effect of peat, pig manure and other peasant fertilizer prevention and control of “flowers and not real”; the method of economic use of boron fertilizer and the effect of spraying boron on cabbage varieties, etc., in 1974 Based on the winter field experiment, field experiments were further conducted in the winter of 1975. Test conditions are as follows: