At different seeding time, the variety YD22's dry weight accumulation is more than SC704. This suggests that YD22 has bigger production potentiality.
从品种来看，2品种YD22和SC704在不同播期均是YD22的干物重积累量大，说明yd22有着较大的增产潜力。
At the same time, seeding time, seeding rates and row widths are all chosen to give crops a competitive edge over weeds.
同时选择合适的播种时间、播种率、行间距为作物创造有利的与杂草竞争的条件。
Result All reviewing items existed some difference among the herba leonuri at different seeding time.
结果播种期不同，各项观察指标均有一定差异。
The seeder roller wheel has the advantages of simple structure, convenient use, and high seed rate and meets the needs of seeding for different crops at the same time.
结构简单，使用方便、播种率高的同时又能满足播种不同作物的作物 的优点。
The seeder roller wheel has the advantages of simple structure, convenient use, and high seed rate and meets the needs of seeding for different crops at the same time.
结构简单，使用方便、播种率高的同时又能满足播种不同作物的作物 的优点。
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