| 1. | 2 the spatial pattern of the over - wintering form of tetranychus viennensis zacher was aggregation distribution
2越冬态山楂红蜘蛛的空间分布型都是聚集分布。 |
| 2. | , aphis citricola van der goot , drosicha corpulenta ( kuwana ) and choristoneura longicellana walsingham . among these species tetranychus viennensis zacher , lithocolletis ringoniella mats , and aphis citricola van der goot were the superiority species
地上部种类有山楂红蜘蛛、绣线菊蚜、金纹细蛾、草履蚧、黄色卷蛾，其中山楂红蜘蛛、绣线菊蚜、金纹细蛾为优势种。 |
| 3. | 3 tetranychus viennensis zacher had two occurrence peaks in early growth period of apple : the first was from the end of march to the beginning of april and this was the result of the breeding of the over - wintering form of tetranychus viennensis zacher
3苹果生长前期山楂红蜘蛛有两次发生高峰，第1次发生高峰是在3月底4月初，主要是越冬代繁殖结果；第2次高峰发生在6月底7月初。 |
| 4. | They concentrated in trunk and first layer limbs . the quantity in these two parts made up 67 . 85 percent of the total quantity of tetranychus viennensis zacher in apple tree , but there were little amount of tetranychus viennensis zacher in center trunk and the second layer limbs
越冬态山楂红蜘蛛在苹果树体上集中分布在主干及第1层主枝上，这两个部位的山楂红蜘蛛数量占树上山楂红蜘蛛总量的67 . 85 ，而中心干及第2层主枝上则分布很少。 |
| 5. | The population quantity of lithocolletis ringoniella mats , made up the absolute predominance from the middle ten days of july to the beginning of august and the population quantity of aphis citricola van der goot made up the absolute predominance from the last ten days of april to the beginn ing of june
山楂红蜘蛛种群数量在3月中旬4月中旬占绝对优势，金纹细蛾种群数量在7月中旬8初占绝对优势，绣线菊蚜种群数量在4月下旬6月初占绝对优势。 |
| 6. | The over - wintering form population of hawthorn spider mite in free - pollutant culture apple orchard was ground orchard > southern exposure orchard > northern exposure orchard . there had significant level at 0 . 01 among these three orchards . culture condition affected the distribution of tetranychus viennensis zacher also
果园立地类型对越冬态山楂红蜘蛛的分布有着显著的影响，越冬态山楂红蜘蛛种群数量平地园阳坡园阴坡园，三者之间差异达极显著水平。 |
| 7. | Tetranychus viennensis zacher in trunk were concentrated in old crack barks and girdling cracks . tetranychus viennensis zacher in first and second limbs were concentrated in the boundary of axial shoot and stem , axial shoot and center trunk , girdling cracks , pruning wound and aerial roots et al . these tetranychus viennensis zacher were distributed mainly in the shady side of the branch
主干上的山楂红蜘蛛主要集中在老翘皮下及环剥裂缝内，分布于第1 、 2层主枝上的红蜘蛛主要集中在主枝与主干、主枝与中心干交界处、环剥裂缝、剪锯口、气生根等处，且主要分布在枝条的背阴面(下部) 。 |
