论文部分内容阅读
冬春季节进行棚室蔬菜育苗病害,由于苗床温度低,光照不足,通风不良,湿度大,秧苗容易感病死亡,严重时常导致育苗失败。其防治措施是:1.选用无病床土。蔬菜育苗时,最好使用比较肥沃的、连续5年未种过茄果类、瓜类及十字花科蔬菜的大田土壤作床土,土质以沙壤为好,并且要注意选择13～17厘米以内的表层土;忌用园土作床土。为防止土壤带菌传
Winter and spring greenhouse greenhouse nursery disease, due to the seedbed temperature is low, inadequate lighting, poor ventilation, humidity, seedlings susceptible to death, serious often lead to nursery failure. The prevention and treatment measures are: 1. Selection of bed-free soil. Vegetable nursery, it is best to use more fertile, for 5 consecutive years have not planted solanaceae, melons and cruciferous vegetables in the soil as bed soil bed soil, sandy soil as well, and should pay attention to choose 13 to 17 cm Within the topsoil; avoid garden soil for bed soil. To prevent the transmission of soil bacteria