礦油或植物油乳劑,對若干種害蟲有觸殺作用,早經證實。在產礦油的國家,多致力提倡利用各種礦油如粗礦油、各級滑油、火油等,製成乳劑,用以滅除冬季植物休眠期的疥殼蟲或蟲卵,在夏季可以防除蚜蟲。我國礦油稀少,自應大力提倡利用植物油乳劑來防治害蟲,方法雖有些古老,趕不 Mineral oil or vegetable oil emulsion, a number of pests have contact effects, as early proven. In mineral oil-producing countries, we are more than committed to promoting the use of various mineral oils such as crude mineral oil, oil grades at all levels, oil, etc. to make emulsions to eliminate winter beetles or insect eggs in dormancy during the summer season Aphids can be controlled. Since mineral oil is scarce in our country, we should vigorously promote the use of vegetable oil emulsions to prevent and control pests. Although some of the methods are ancient and catch up