不同储藏时间的土壤修复剂抑制根结线虫的效果评价

摘 要: 为明确本实验室研制的土壤修复剂的有效储藏时间，本研究在实验室条件下从千秋1号黄瓜幼苗的叶片面积、地上重、须根数量和总长度、每10cm根系长度的根瘤数量几个方面评价了不同储藏时间的土壤修复剂对南方根结线虫（Meloidogyn incognita）的抑制效果和对黄瓜生长的促进效果。结果显示：与线虫对照相比，储藏14周的土壤修复剂可以使生长20d的黄瓜叶片面积增加113.12%，地上部增重30.19%，其结果都极显著优于储藏1周、16周、37周和42周的土壤修复剂；储藏14周的土壤修复剂还可以使生长20d的黄瓜须根数多178.15%，其结果与储藏1周和42周的无极显著差异；储藏1周和14周的土壤修复剂使黄瓜根总长增长200%以上，使根瘤数减少72.82%，各处理间无极显著差异。综上所述，14周的存放时间为土壤修复剂的最佳储藏时间。

Evaluation of different storage period of soil amendment effect on suppressing root-knot nematode(Meloidogyn incognita)

To determinate the effective storage period of soil amendment （SA,developed by the laboratory of Entomology and Nematology-LEN） on cucumber growth promotion and on root-knot nematode （Meloidogyn incognita） suppression,the evaluation was carried out in laboratory related to cucumber （Qianqiu 1 variety） leaf total area,seedling weight above the ground,number of fibrous root and total length and the number of root-knot/10 cm root length.The results demonstrated that comparing with the nematode control,stored 14 weeks ＇ SA could increase 113.12% cucumber leaf area,30.19% seedling weight after 20 days ＇ growth,which were significant higher than those of SA stored for 1,16,37 and 42 weeks.The 14-week SA could also increase 178.15% number of fibrous roots.There was no significant difference with that of 1 week and 42-week SA.After 1 or 14 week storage,SA could increase more than 200% the total length of fibrous roots and decrease 72.80% the number of root knots.There was no significant difference among the SA in different storage period.In brief,14-week storage was the best period for SA store.