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2013•Heilongjiang nongye kexueRequires access

Weed Survey of Sunflower Field in Northwest Region of Heilongjiang Province

Huang Yuan-ju

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Abstract

In order to ascertain the weed harm situation of the sunflower field in the northwest region of Heilongjiang province,the weed in the northwest region of Heilongjiang province in 2009and 2012was investigated.The result showed that there were 62weed species in sunflower fields,which belonged to 22families.Occurences frequency of 8 weeds were over 50%,they were Echinochloa crus-galli,Amaranthus retroflexus,Chenopodium album,Polygonum bungeanum,Xanthium sibiricum Patrin,Setaria viridis,Setaria glauca,Sonchus brachyotus.These species could be seen as main weeds in sunflower field in Heilongjiagn northwest region.

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What this paper is about

In order to ascertain the weed harm situation of the sunflower field in the northwest region of Heilongjiang province,the weed in the northwest region of Heilongjiang province in 2009and 2012was investigated.The result showed that there were 62weed species in sunflower fields,which belonged to 22families.Occurences frequency of 8 weeds were over 50%,they were Echinochloa crus-galli,Amaranthus retroflexus,Chenopodium album,Polygonum bungeanum,Xanthium sibiricum Patrin,Setaria viridis,Setaria glauca,Sonchus brachyotus.These species could be seen as main weeds in sunflower field in Heilongjiagn northwest region.

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Available abstract

In order to ascertain the weed harm situation of the sunflower field in the northwest region of Heilongjiang province,the weed in the northwest region of Heilongjiang province in 2009and 2012was investigated.The result showed that there were 62weed species in sunflower fields,which belonged to 22families.Occurences frequency of 8 weeds were over 50%,they were Echinochloa crus-galli,Amaranthus retroflexus,Chenopodium album,Polygonum bungeanum,Xanthium sibiricum Patrin,Setaria viridis,Setaria glauca,Sonchus brachyotus.These species could be seen as main weeds in sunflower field in Heilongjiagn northwest region.

Key concepts: Setaria viridis, Weed, Chenopodium, Sunflower, Biology, Setaria, Echinochloa, Noxious weed

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