CAJ | 학술논문

为了有效防治玉米粗缩病,采用内吸性杀虫剂拌种防治介体昆虫的方法控制玉米粗缩病.结果表明:利用新烟碱类杀虫剂噻虫嗪(有效成分)2.1～2.8 g拌1 kg种子,对玉米灰飞虱的防治效果为73.90%～83.98%,对玉米粗缩病的防治效果喇叭口期为85.35%～87.05%,收获期为72.15%～73.18%;用吡虫啉(有效成分)2.8～3.5 g拌1 kg种子对玉米灰飞虱的防治效果为60.42%～83.18%,对玉米粗缩病的防治效果喇叭口期为84.10%～87.61%,收获期为72.35%～74.34%;与空白对照相比小区产量增加了36.38%～38.06%.而且拌种对种子无害,各药剂拌种处理的种子出苗率在90%以上,与不拌种差异不显著.
위료유효방치옥미조축병,채용내흡성살충제반충방치개체곤충적방법공제옥미조축병.결과표명:이용신연감류살충제새충진(유효성분)2.1～2.8 g반1 kg충자,대옥미회비슬적방치효과위73.90%～83.98%,대옥미조축병적방치효과나팔구기위85.35%～87.05%,수획기위72.15%～73.18%;용필충람(유효성분)2.8～3.5 g반1 kg충자대옥미회비슬적방치효과위60.42%～83.18%,대옥미조축병적방치효과나팔구기위84.10%～87.61%,수획기위72.35%～74.34%;여공백대조상비소구산량증가료36.38%～38.06%.이차반충대충자무해,각약제반충처리적충자출묘솔재90%이상,여불반충차이불현저.
Maize rough dwarf virus (MRDV) that spread by vector Laodelphax striatellus Fallen was a virus that had a latent development period of 15 to 20 d. The direct control effect for MRDV was worse,but spray key time to control vector was difficult to grasp. Seeds dressing with imidacloprid and thiamethoxam against Laodelphax striatellus was effective prevention and control technology of maize rough dwarf virus. The control effect of seed dressing with imidacloprid and thiamethoxam on Vector Laodelphax striatellus Fallen and maize rough dwarf virus(MRDV) was carried out in field. The results showed that the control effect of seed dressing to vector Laodelphax striatellus Fallen was 73.90%-83.98% and 60.42%-83.18%;while the control effect to maize rough dwarf virus was 85.35%-87.05% and 84.10%-87.61% at large-bugle stage and 72.15%-73.18% and 72.35%-74.34% at harvest time with thiamethoxam at 2.1-2.8ga.i./kg seed and imidacloprid at 2.8-3.5ga.i./kg seed,respectively. Compared to no treatment,the yield added 36.38%-38.06%. Seed dressing with imidacloprid and thiamethoxam was no-injury to corn seed and the germinating rate was above 90%. Seed dressing treatment with imidacloprid and thiamethoxam would delay the mean time for seed germination and seedling emergence in 1-4 d after the sowing,yet afterwards the growth speed of corn seedling was faster and the seedling was robust. Thus it can be seen that seed dressing with imidacloprid and thiamethoxam not only had effect on Vector Laodelphax striatellus Fallen,but also could prevent or alleviate MRDV occurrence and spread,and had the significant increase effect on yield. Seed dressing was one effective measure of control and prevent against MRDV.