infected field 中文意思是什麼
infected field
解釋
污染用-
The antibiotic 2507 has also satisfactory effect for controlling chinese cabbage downy mildew disease infected by peronospora parasitica fr. with efficacy 87. 5 % in field test
結果表明，抗生素2507在溫室人工接菌情況下，防治黃瓜疫病的效果可達95 %以上，田間小區防治小白菜霜霉病的效果達到87 . 5 % 。 -
The rna genome of virus used for rt - pcr can be isolated not only from the infected chicken embryonated fluids, but also directly from tissue homogenate of field samples. the detection results of 67 field samples were identical with that of the conventional diagnosis
本方法只需一個rt - pcr反應，整個過程在8小時內完成，既可取感染雞胚尿囊液檢測， 2002年）丫h人《 『 wif寸它義：也可從病料直接檢測。 -
So far we have no sufficient evidence to testify the seeds naturally infected withthe pathogen in growing field can transmit this disease
作者通過大量的播種試驗，到目前為止還末能證實來自自然發病田的種子常規越冬后能夠傳病，相關工作正在進行中。 -
Then, the plasmid was transformed into jm109. the full length pstvd cdna recombinant plasmid was further identified by restriction mapping analysis and the nucleotide sequence of cdna cloned in pmd 18 - t vector was analyzed with ab1 377 dna sequence. test showed that the cdna of this chinese pstvd isolate was the same as pstvd - kf - 6 mild " type " isolate which originated from naturally infected potatoes in field of cornell university potato breeding program
利用rt - pgr技術，設計一對引物，對田間採集的經鑒定含pstvd的陽性樣品進行全序列擴增，並將所得產物純化回收，連接到pmd18t - vector中，並轉化至大腸桿菌jm109中，挑選白斑進行雙酶切（ saci / ecorv ）鑒定證明插入片段為359bp大小，進行序列測定，所得克隆基因為pstvd全序列負鏈，大小為359bp 。 -
Pathogenicity of 31 field strains of infections bursal disease viruses ( ibdv ) isolated during 1997 - 2001 in china was compared in spf chickens at different ages. the results indicated that the mortality induced by different strains varied very much. the mortality was also influenced by the age of chickens when infected
為了弄清我國各地流行的ibdv毒力程度，在3 ? 7周齡spf雞進行人工感染的致病性試驗，以此比較研究了1997 ? 2001年期間從我國不同地區分離到的31個ibdv野毒株。
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