叶子花(Bougainvillea),又称九重葛,紫茉莉科,是一种不发生虫害的观赏植物。1985年发现其藤茎含有某些昆虫的保幼激素。印度有关专家将其荫干的叶分别用石油醚、丙酮和水作淬取剂浸出植液并用丙酮配成1％的溶液,对棉红蝽未配的成虫腹部用微涂敷器给药1μl,结果棉红蝽雄性不育最高达90％,雌虫不育达74％。有关人员为 Bougainvillea, also known as Bougainvillea, is a non-pest ornamental plant. In 1985 it was found that its cane contains juvenile hormones for certain insects. Indian experts will their leaves were shaded dry petroleum ether, acetone and water as the hardener leaching plant and acetone dubbed 1% solution, the cotton bud bugs unopposed adults with a micro-applicator administered 1μl As a result, the highest male sterility of cotton stink bug 90%, male infertility reached 74%. Relevant personnel