近年来,我省水稻缺钾现象日趋严重,缺磷现象仍相当普遍。磷钾营养不足是各地发生水稻坐苗的主要原因。如能及时了解水稻生长过程的营养状况,就能更有效地采取措施,减少这种坐苗损失。因此,寻找诊断方法和相应的诊断指标,就成为生产实践赋予研究者的任 In recent years, rice potassium deficiency in our province is becoming more serious, phosphorus deficiency is still quite common. Phosphorus and potassium deficiency is the main reason rice seedling occurs around. If we can keep abreast of the nutritional status of rice growth, we can take more effective measures to reduce the loss of sitting seedlings. Therefore, the search for diagnostic methods and the corresponding diagnostic indicators, to become productive practice given to any researcher