论文部分内容阅读
大白菜，是我国食用量最大的蔬菜品种之一，但大白菜干烧心病时常发生，对大白菜的生产造成了严重危害。为减轻其危害程度，笔者自１９９７年开始对大白菜干烧心病的成因及防治进行了研究，取得了一定效果。一、病因与影响因素１植株体内钙吸收困难。在北方石灰性富钙土壤上?
Chinese cabbage is one of the most edible vegetable varieties in our country, but Chinese cabbage is often suffered from heartburn and causes serious harm to the production of Chinese cabbage. In order to reduce its harm degree, the author started to study the cause of the heartburn and the prevention and cure of Chinese cabbage since 1997, and achieved some results. First, the etiology and influencing factors 1 plant calcium absorption difficult. In the northern calcareous calcium rich soil?