摘要
1996-1998年对甘肃农业大学校园周围4种果树的根际线虫种群进行了调查。从采。集的288份土样中共分离到7个属的寄生线虫，其中短体线虫属（Pratylenchus）的寄生线虫最多。线虫种群初步统计表明，寄生线虫占117％，腐生类占52．6％，捕食类占30．2％，矛线类占5．5％。线虫种群垂直分布以20～50cm土中数量最多。4种果树中，以苹果树根际线虫密度最大，梨树次之，桃树和葡萄根际线虫种类较少。
The investigation was carried out on nematode population in the rhizosphere of 4kinds of fruit trees. 7 generals of parasitie hematode were isolated from 288 soil samples, in which Pratylenchus was the moyt common hematode. The parasitic, the saprophytic, the carnivorous and the dorylaimda accounted for 11 .7 %, 52.6 %, 30.2 % and 5.5 % respectively of the investigated nematode population the vertical distribution of the nematode population concentrated from 20 cm to 50 cm of soils. There was a dense population in the rhizosphere of apple trees, and a sparse popution in the rhizosphere of peach treas and vine.
出处
《甘肃农业大学学报》
CAS
CSCD
1999年第2期130-133,共4页
Journal of Gansu Agricultural University
关键词
果树
根际线虫
种群
fruit tree rhizosphere
nematode population
