Planting evaluation of new Rumex varieties introduced from Russia in Heilongjiang Province

The low temperature time is long in the northern part of Heilongjiang Province, and the land salinization in the western region is serious, which are two main factors that restrict the development of local agriculture and animal husbandry. In order to obtain forage adapting to the climate in Heilongjiang province and soil types, weevaluated agronomic characters and nutritional value for the new Rumex species “Щавель Чемпион” imported from Russia in five representative planting plotsrepresenting different accumulated temperature zone in Heilongjiang province such as Acheng, Zhaozhou, Xunke, Nenjiang and huma. The results showed that the growth status of the species in Zhaozhou was significantly lower than other regions, while it grownbetterin Nenjiang than other regions. The biomass was more than 150t/hm2 in Acheng, Xunke, Nenjiang, but slightly lower in Zhaozhou and huma, which were also above 120 t·hm-2. The nutritional data showed that the crude protein and crude fat content of samplesfrom Achengwere significantly higher than other regions (P<0.05), the crude protein was 18.41% and crude fat was 3.82%; The crude fiberof samples in Zhaozhou was significantly lower than other regions (P<0.05), and the content was 10.75%, while crude ash contentwas significantly higher than that of other planting areas (P<0.05), reaching 14.85%; calcium and water content in Nenjiang and huma respectively was higher than the other areas but did not reach significant level. The results showed that new variety ‘Щавель Чемпион’ has a good adaptability,which can grow in differenttypes of soil, and in different regions of Heilongjiang Province.