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犁耕作

犁耕作

犁耕作

犁耕作

1

Johnson rotated corn and soybeans on one set of plots that were fertilized and tilled every year with a chisel or moldboard plow .

约翰逊在一组试验田里轮作种植玉米和大豆，这组试验田每年都施以化肥，并用凿形松土犁或铧式犁耕作。

2

Machinery and equipment for working the soil; mouldboard plough working elements; vocabulary

土壤耕作机械和设备 .有壁犁耕作部件 .词汇

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