cultivator
/ˈkʌltɪveɪtə(r)/noun
1- a person or thing that cultivates something耕种者; 培养者; 栽培者：
they were herders of cattle and cultivators of corn.
他们既是牧牛人, 又是谷物栽培者。
1.1
- a mechanical implement for breaking up the ground and uprooting weeds耕耘机, 中耕机。