primary infection source

常見例句

雙語例句

• The primary source of infection was the oospore overwintered in soil and plant survival.
  其主要侵染來源是土壤中和植物病殘躰上越鼕的卵孢子。
• Primary infection source may be reduced by breeding and selecting the variety with the lower infected seedling rate of seed-borne SMV.
  可以通過選育和篩選種傳病苗率低的品種推廣，減少本病的初次侵染來源。
• It is presumed that chlamydospore may be the major primary infection source of rice false smut and begin to infect the panicles of rice before or after florescence.
  一般認爲厚垣孢子是稻曲病主要的初侵染源，在水稻開花前後從穗部進行侵染；
  http://dict.cnki.net
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