粮食产量的英文：
grain yield
grain output

参考例句：

The production of foodstuff increased by 50 percent
粮食产量增长50%。

grain是什么意思：
n. 谷物；颗粒；一点儿；纹理；本质
v. 使成粒状

They are similar in grain.
他们气质相似。

Slowly each grain of wood was replaced with grains of minerals.
慢慢地所有的木质都被矿物微粒所取代。

Grain by grain and hen fills her belly
一粒一粒啄米,母鸡填饱肚皮

yield是什么意思：
v. 出产；带来；给予；让出，放弃；屈服；投降
n. 产量；收获量；收益

The enemy yielded.
敌人投降了。

yielding material gain or profit.
产生物质利益和利润。

To give or yield permission to or for.
同意给予批准或许可

output是什么意思：
n. 产量；输出功率；输出
v. 输出（信息、结果等）

As a result daily output has doubled.
结果日产量翻了一番。

That is the information outputed from the computer .
这是计算机提供的的信息。

output file collation control
输出文件核对控制