生物有机肥对西葫芦生长及根结线虫防效的影响

为测定生物有机肥在田间对西葫芦生长影响及根结线虫防治效果,使用由不同菌株发酵的生物有机肥处理西葫芦及根结线虫发生严重的区域,结果表明:与对照相比,使用生物有机肥后,首先可显著提高植株茎粗、叶绿素含量、地上及地下生物量;其次可显著降低土壤中根结线虫二龄幼虫密度、根结指数和单株根系虫卵数,明显减轻根结线虫田间发病率,最高防效可达63.00%;同时还可显著提高土壤中自由线虫数量。因此,使用生物有机肥能显著提高西葫芦植株生物量,有效防治根结线虫的田间危害。

Effects of bio-organic fertilizer on zucchini growth and control of root-knot nematode

To study the effect of bio-organic fertilizer(BOF) on the growth of zucchini and control of zucchini disease caused by root-knot nematode (RKN) in field,experiments were conducted by applying the BOF fermented by different strains in the fields of healthy zucchini and seriously diseased seriously zucchini by RKN.The results showed that:Compared with the control,the diameter of plant stem,chlorophyll content,shoot and root weight were obviously increased after application of BOF;The population of the second-stage juveniles RKN,gall index,number of eggs per plant and incidence of RKN in field were significantly reduced with the maximum control efficiency of 63.00%;The number of freedom nematodes in soil were tremendously increased.In conclusion,application of BOF promoted the growth of zucchini and effectively prevented the damage caused by RKN in field.