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稻蓟马从5月上旬开始侵入稻田,至7月中下旬以后种群数量开始雕落,在这期间先后出现三次为害高峰。第一次高峰出现在5月下旬至6月上旬,主要为害绿肥茬双早稻苗和单双季早、中稻秧苗;第二次出现在6月中下旬,主要为害单双季早、中稻稻苗和中、晚稻秧苗;第三次出现在7月上中旬,主要为害双晚秧苗和中、晚稻稻苗。一般以第二次高峰虫量最大,第一次高峰最小。第一、二次以若虫为主,第三次则成、若虫并发为害。
The rice thrips invaded the paddy fields from the beginning of May to the beginning of the middle of July and the number of the population began to fall. During this period, three peak levels of pests occurred. The first peak appeared in late May to early June, the main damage to green stubble double early rice seedlings and single double early, middle and late rice seedlings; the second occurred in late June, the main damage single and double seasons early, mid-rice seedlings And middle and late rice seedlings; the third appeared in mid-July, the main damage to double late rice seedlings and late rice seedlings. The second peak of the general amount of the largest peak, the first peak minimum. First, the second to nymphs, the third is, nymphs complicated damage.