| Weeding effects of integrated control in oat field with conservation tillage |
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| DOI：10.7606/j.issn.1000-7601.2014.04.037 |
| Key Words: conservation tillage oat field weed integrated control |
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| Abstract: |
| The experiment was carried out to study the influences of density of various weeds on yield of oat under different conservation tillage, to understand the harmfulness level of weeds and the effects of integrated control. There were 6 categories of treatments, including single-factor or multiple-factor chemical control, mechanical control, agronomic control, manual control, mechanical + chemical control and integrated control, and 37 concrete treatments. The growth and harmfulness characteristics of weeds in oat field with conservation tillage were observed. The results indicated that there were mainly 6 families or 14 varieties of weeds in oat field with conservation tillage, in which Chenopodium album L., Salsola collina Pall. and Setaria viridis (L.) Beauv. were the most harmful weeds occurring mainly between mid May and early June. There were remarkable differences of weed control effects among different measures. The weed control effects of different measures were ordered as: integrated control＞manual control＞mechanical + chemical control＞multiple-factor chemical control＞single-factor chemical control＞mechanical control＞different coverage＞different sowing amount＞farming system＞different sowing time. |
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