阶梯倍投方案1,2,2,4,4

简介：People depend on food, agriculture is the foundation of our Ming Dynasty, and agricultural administration is the foundation of agriculture. Among agricultural administration, water conservancy comes first. Now that there have been severe droughts for many years, water conservancy is even more important. Otherwise, even if we plant corn and potatoes, , it is difficult to have a good harvest. Zhu Cixiang said.