论文部分内容阅读
我国西部退耕还林还草工程的实施 ,需要大面积播种豆科灌木和豆科牧草。接种根瘤菌是解决大面积人工林、草场“氮缺乏”问题的有效措施。在贫瘠的土地上豆科植物接种根瘤菌可增加生长量 15%～ 50 % ,每年可增收干草 750～ 12 0 0kg/hm2 。豆科根瘤菌接种的技术关键包括优良菌种、优质菌剂选择和种子丸衣化接菌技术。目前 ,国家农业微生物菌种中心保藏着几百株豆科根瘤菌菌种 ;国内根瘤菌剂生产企业可以生产锦鸡儿、沙打旺、苜蓿、三叶草等十几种根瘤菌剂产品 ;丸衣接种技术在我国推广应用面积已超过 133.33万hm2 。根瘤菌接种技术在退耕还林还草中的作用是其他技术无法替代的 ,有十分重要的地位。
The implementation of the Project of Returning Farmland to Forest and Grassland in Western China requires planting a large area of leguminous shrubs and legumes. Rhizobium inoculation is an effective measure to solve the problem of “nitrogen deficiency” in large-scale plantations and grasslands. Rhizobium inoculation of leguminous plants on barren land can increase the amount of growth by 15% ~ 50% and increase hay by 750 ~ 1200kg / hm2 per year. Legume Rhizobium inoculation of the key technologies include excellent strains, selection of high quality agents and seed pills Yixie bacteria technology. At present, the National Agricultural Microbiological Center holds hundreds of strains of Leguminosae Rhizobia strains; the domestic rhizobia agent production enterprises can produce more than ten Rhizobium agents such as Caragana, Astragalus, alfalfa, clover; Pill Technology in China to promote the application area has more than 1.3333 million hm2. Rhizobium inoculation technology in the role of returning farmland to forest and grass is irreplaceable by other technologies, has a very important position.