作物研究2018，Vol.32Issue(2)：121-126,6.DOI:10.16848/j.cnki.issn.1001-5280.2018.02.08
水稻免耕直播秸秆覆盖条件下稻田杂草的发生规律和防治策略
The Happening Regularity and the Prevention and Control Strategies of Weeds in No-tillage and Direct Seeding Paddy with Straw Mulching
摘要
Abstract
Weed happen conditions were investigated in later no-tillage and direct seeding paddy with straw mulching of Zhanjiang City,in order to explore the happen regularity of weeds and develop effective prevention and control strategies.The results showed that there were 15 weeds species of 8 families,the dryland weeds showed a tendency to spread to the paddy fields.Straw mulching had certain effect to inhibit weed seed germination;gramineous weeds occurred with single peak,sedge and broadleaf weeds occurred with two peaks.The weeds community structure was dominated by sedge-gramineous weeds and broadleaf weeds.Fimbristylis miliacea had the highest relative abundant (RU) in weeds community.The spatial distributions of weeds were gramineous weeds,sedge-broadleaf weeds,and broadleaf weeds respectively at upper,middle and lower layers.The comprehensive infestation index (CⅡ) ranging of the dominant weed species were Fimbristylis miliacea,Echinochloa crusgalli,and Leptochloa chinensis.topical dominant weed species were Cyperus difformis,Alternanthera Philoxeroides.The cause of paddy weeds was discussed,and the prevention and control strategies were formulated,in order to minimize the yield loss by weeds.关键词
稻田/秸秆覆盖/杂草/发生规律/防治策略Key words
paddy/straw mulching/weed/happening regularity/prevention and control strategy分类
农业科技引用本文复制引用
徐志军,徐建欣,杨洁..水稻免耕直播秸秆覆盖条件下稻田杂草的发生规律和防治策略[J].作物研究,2018,32(2):121-126,6.基金项目
国家自然科学基金青年基金项目(31400280) （31400280）
海南省自然科学基金(20153146) （20153146）
中央级公益性科研院所基本科研业务费专项资金(院本级17CXTD-03,院本院1630102016110,院本级1630102017001) （院本级17CXTD-03,院本院1630102016110,院本级1630102017001）
中国热带农业科学院湛江实验站科研启动专项经费(zjky201602). （zjky201602）
