Among the combinations, contour rowing combined with surface tillage produced the most desirable economic characters and yielded the highest [21.62kg per plot(40m~2)].

• 在各处理组合中；以沿等高线种植、浅耕、净作玉米的经济性状最优；小区产量达21.；62千克/40平方米；而顺坡种植、翻耕、净作的经济性状最差；小区产量仅12