施肥对大豆田植物线虫群落结构的影响

线虫病害已成为农业生产中不容忽视的主要病害之一,其危害超过细菌和病毒,仅次于真菌病害,为了探讨施肥方式对植物线虫种群密度的影响,对中国科学院海伦农业生态试验站长期定位试验区大豆田(无肥、化肥、化肥+有机肥3种施肥方式)不同时期植物线虫群落结构进行研究。结果表明:播种期植物线虫密度和总体线虫密度较小,随着大豆生育期的推进,植物线虫密度和总体线虫密度增大,施肥方式没有改变植物线虫优势种群,但施有机肥降低了植物线虫所占比例。

Effectsof Fertilization System on Plant Parasitic Nematode Communities in Soybean

Nematode disease is one of the most important diseases in agriculture.It causes plant harm over bacteria and virus below fungal disease.This test researched the community structure of plant parasitic nematodes in soybean（no fertilizer,chemical fertilizer,chemical fertilizer ＋ manure） which were in a long-term localization field test in Hailun agro-ecological experimental station,Chinese Academy of Sciences.The results showed that the density of nematode was smaller in sowing stage,and increasing with the soybean growth.The dominant genera of plant parasitic nematode could not be influenced by fertilization,but manure could decrease the proportion of plant parasitic nematode.