如果考虑到农田杂草的空间分布，实际可以节约96.4%的农药。
If the spatial distribution was considered in field, around 96.4% herbicide could be saved.
选择不同开垦年限的农田，测其土壤理化性质，调查农田杂草种类状况。
The farmland reclaimed in different years are chosen to measure the physical and chemical properties of soil and to investigate the situation of weeds in farmland.
但是，化学除草在使用中存在许多问题，为此论述农田杂草防治应采取的措施。
But there are many problems in the use of chemical weeding so we should take synthetical measures to prevent and cure the weeds.
应用推荐