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去冬,我所引进“曲江黄花”、“泸州5号”等七个油菜品种试种,其中“泸州5号”“云油6号”、“矮架早”、“黑油2号”等四个甘蓝型品种均发生“花而不实”。“泸州5号”未进行喷硼试验,颗粒无收。“黑油2号”、“云油6号”、“矮架早”三个品种经后期喷硼,抑制了病情的发展,收得三成。根据实践,我们初步认为,甘蓝型油菜品种对硼元素较为敏感,缺硼则影响结实。现将栽培过程中观察到的病株症状,防治过程及几点体会分述如下:
In the winter, I introduced seven varieties of rape cultivars such as “Qujiang Huanghua” and “Luzhou 5”, among which “Luzhou No.5”, “Yunyou 6”, “Xiajianzao” and “Heiyou No.2” Four other varieties of cabbage have occurred, “Flowers and not real.” “Luzhou 5” did not spray boron test, no crop particles. “Black Oil 2”, “Yunyou 6”, “short shelf early” after the three varieties of boron spray, inhibiting the development of the disease, received 30%. According to practice, we initially believe that the Brassica napus varieties are more sensitive to boron, boron deficiency will affect the firm. Will now be observed during the cultivation of disease symptoms, prevention and treatment process and points are as follows: