Growth and decline law

• 消长规律

Growth and decline law的用法和样例：

例句

1. The growth and decay rule of Sheath Bligh of Rice was studied by spot espial and meteorogy observation in The Rice Area of Hanzhong.
   摘要采用定点观察的方法，结合当地气象资料，研究了汉中稻区水稻纹枯病的田间消长规律。