Ming Dynasty: from Farming to the World's Granary

Dressed as Zhu Yuanzhang's fifth son, he didn't wait for the golden finger of the system. Others are grabbing the throne, but I just want to farm. With hybrid rice breeding and indigenous fertilizer purification, doubling the yield per mu is not a dream. After marrying Xu Miaoyun and taking in my sister-in-law, my father-in-law wants to drag me to fight? Let me collect this experimental field first!