近几年来,随着耕作制度的改革和施肥水平的提高,水稻纵卷叶虫发生时间长、数量大、为害重,已成为我县水稻的一种主要害虫。据测定,稻叶被害发白的三熟制前季稻,每穗饱谷数要减少17.9％,千粒重要减轻5.4克,产量损失达27％。真是所谓“稻叶白一白,减产一、二百”。”为了更好地防治纵卷叶虫为害,确保水稻丰收,现将近几年积累的有关资料归纳介绍如下,供大家参考。 In recent years, with the reform of farming system and the improvement of fertilization level, the mesophyte has a long time, a large number of heavy damage, has become a major pest of rice in our county. It has been determined that the paddy rice damaged white three-season pre-season rice, full-grain per panicle to reduce the number of 17.9%, 1,000-grain important to reduce 5.4 grams, the production loss of 27%. Really so-called “rice white and white, cut one or two hundred.” In order to better prevent the damage of leaf roller worms and ensure the rice harvest, the relevant information accumulated in recent years are summarized below, for your reference.