不同储藏时间的土壤修复剂抑制根结线虫初步效果评价

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

为确定土壤修复剂的有效储藏时间,在试验室条件下从‘千秋1号’黄瓜幼苗的每10cm根系长度的根瘤数量、根数目、根总长、叶片面积、地上重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1周和14周的土壤修复剂使生长20天的黄瓜根瘤数减少72.82%,根总长增长200%以上,各处理间无极显著差异;储藏14周的土壤修复剂可使黄瓜根的数量增多178.15%,其结果与储藏1周和42周的无极显著差异;储藏14周的土壤修复剂还可使生长20天的黄瓜地上部增重30.19%,叶片面积增加113.12%,极显著优于储藏1周、16周、37周和42周的土壤修复剂。经估算,每棚使用储藏14周的土壤修复剂可增产黄瓜1750kg,增加收入3500元。

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.