rkn

Application of bio-organic fertilizers effectively reduced the population of the second instar larvae of RKN in soil and egg mass of RKN in roots;

施用生物有机肥可显著减少土壤中根结线虫二龄幼虫的密度和根中卵块的数量；

In conclusion, application of bio-organic fertilizers in field conditions could effectively control damages caused by RKN to muskmelon.

综上所述，施用生物有机肥能有效防治田间条件下根结线虫对甜瓜的危害。

Taking the advantage of thermal microbalance the kinetics of steam gasification of carbon deposited on the Ni-Catalyst containing rare earth oxide-REN has been studied and comPared with the kinetics on the Ni-Catalyst-RKN which contains no rare earth oxide.

用热重天平法研究了天津大学研制的含稀土的Ni催化剂REN上水蒸汽消碳动力学，并与丹麦研制的不含稀土的Ni催化剂RKN作了比较。

The population density of root-knot nematodes in soil is significantly correlated with the damage degree on the host. Therefore, accurately, reliably and rapidly identifying and counting RKN in soil is critically important for the effective control of disease.

土壤中根结线虫的群体密度与作物的受害程度关系密切，因此，准确、可靠和快速地鉴定和计数土壤中的根结线虫，对该病害的有效防治至关重要。

With the popularization of greenhouses cultivation, the RKN disease happens more extensively and severely than ever before.

随着温室大棚的推广，根结线虫病发生比以往更加广泛和严重。

Root-knot nematodes ( RKN, Meloidogyne sp.) are harmful to the agricultural production in the worldwide.

根结线虫（Meloidogyne sp.）严重危害世界农业生产。