南黃薊馬(Thrips palmi Karny)在茄園之分布及最適取樣數之估測

Abstract

調查茄株嫩葉、中葉、老葉上之南黃薊馬數量，以老葉上最多，約占總數之52%，中葉上約占36%，嫩葉上約占12%。各樣本中三葉片南黃薊馬平均總數對老葉上南黃薊馬平均數之直線迴歸，其R2=0.904，高於中葉之0.715及嫩街之0.458，是以老葉為調查茄園南黃薊馬之良好取樣部位。 Thrips palmi Karny on eggplant was sampled from one each of young, midaged, and old leaves per plant. Most thrips, ~52%, were on the old leaves, the mid-aged leaves contained~36%, and ~12% were on the young leaves. Linear regression of the number of mites sampled per plant against the number of thrips on old leaves gave R2=0.904, higher than those from mid-aged leaves, 0.715, and young leaves, 0.458.