辽阳地区旱直播水稻田间杂草调查

Weed Survey of Rice Direct Seeding Field in Liaoning City

旱直播水稻田杂草旺盛,严重影响水稻生长。本研究对辽阳市旱直播水稻田杂草种类、优势种和分布特点进行了调查。以期为辽阳地区今后大面积推广旱直播水稻的杂草防控技术提供科学依据。结果表明辽阳市旱直播水稻田常见杂草7科,11种,其中禾本科杂草占45.45%,阔叶杂草占45.45%,莎草科占9.10%;除杂草稻外,全市优势杂草共10种,分别为稗草、马唐、千金子、芦苇、苍耳、苘麻、藜、野慈姑、鸭跖草和水莎草。

Lush weed in rice direct seeding field badly effect growth of rice. In order to provide scientific reference for farther weed control of rice direct seeding field in Liaoyang, weed species,domiant species and characteristics of distribution were surveyed. The results showed that there were 11 weed species , which belonged to 7 families, 45.45% of these weed was Gramineae, 45.45% was Broadleaf and 9.10% was Cyperaceae. There were 10 dominant weeds which were Echinochloa crusgali （Linn.） Beauv., sanguinalis （Linn.） Scop., Leptochloa chinensis （Linn.） Nees, Phragmites australis （Car.） Trin. Xanthium sibirlcum Patrin ex Widder, Abutilon theophrasti Medicus, Chenopodium album Linn., trifolia Linn., Commelina communis Linn. and JunceUus serotinus （Rottb.） C. B. Clarke.