aggregate yields造句

planned aggregate yield
计划总当量
with the reform of farm produces circulate system and the implement of " vegetable skep " project, china's vegetable industry has made great progress since our economic reform . now, china has become a country with the most aggregate yields of vegetables in the world
改革开放以来，随着农产品流通体制的改革和“菜篮子”工程的实施，中国蔬菜产业得到了长足发展，产量不断增加，目前中国已成为世界蔬菜生产第一大国；蔬菜对外贸易不断扩大，2000年中国成为世界蔬菜出口第四大国。
It's difficult to find aggregate yields in a sentence. 用aggregate yields造句挺难的