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作物行间的杂草用中耕机、旋耕刀等是容易除掉的,但作物和杂草共存的株间与株旁的杂草则不易除去。过去是用手拔掉或是靠人用耙子除去,近来用除草剂除草。但人工除草效率低,劳动强度又大,而除草剂在旱地中使用效果又不稳定。针对这种情况,作者从1967年以来进行了手扶拖拉机牵引的苗间除草机的试制和改进,并对各种作物进行了使用试验,确认这种除草机大体上是实用的,现将试验研究情况介绍如下。
Weeds in crop rows are easily removed by cultivators, rotary trowels and the like, but weeds that are co-existing between crops and weeds are not easily removed from weeds that are next to the plants. In the past, it was pulled manually or removed by a human rake. Recently, weeding with herbicides has been done. However, the efficiency of artificial weeding is low and the labor intensity is large. However, the use of herbicides in drylands is not stable. In view of this situation, the author carried out the trial manufacture and improvement of the mowing tractor-mounted seed-weeder from 1967, and conducted experiments on the use of various crops to confirm that this kind of weeder is generally practical. Now, the experiment The research situation is introduced as follows.