中文摘要：

野牛草（Buchloe dactyloides（Nutt．）Engelm．）是一种抗逆性强、管理粗放的暖季型草坪草。20世纪40年代，该草作为水土保持植物由美国引种到我国甘肃天水试种，表现出较好的适应性。目前，我国的野牛草品种较为单一，种子产量较低且不稳定，绝大部分种子依赖从国外进口，价格十分昂贵，国内多采用分株无性繁殖方法建植野牛草草坪，但费工费时、

英文摘要：

Buffalo grass （Buchloe dactyloides （Nutt.） Engelm. ） is an extensive managing turf grass that has strong resistance against adverse environment. In the 20th century 40＇s, this grass was introduced as the plant for water and soil conservation from US to Tianshui, Gansu Province and displayed good compatibilities. At present, the variety of buffalo grass is comparatively simplex in our country, the seed output is low and the major amount of seeds are dependent on the import from overseas, and the seed price is extremely expensive. The vegetative reproduction method is usually used to establish the lawn, but it requires a lot of time-consuming works and is not valid for the long-distance application. Therefore, it is a main research direction to breed new varieties with longer green time and higher seed output. In addition, fully use of the strong drought resistance characters of this plant resource and its molecular mechanism as well as the related gene separation and clone would enhance the the arid patience and compatibility of the plant for better perfomences on the desert prevention and control, ecological environmental protection, productivity, and ecological agriculture technologies in the loess plateau areas. The flower organ shape, blossom habit, acceptation of stigma, and the effects of different management regimes on the seed production of B. dactyloides were studied by this research. The result indicates that the flower organ is different greatly in the external shapes and blooming characteristics between male and female, but similar in florescence periods. The acceptation of female stigma is strongest in the latter 10 hours to blossom, and weaken gradually after 24 hours. In order to obtain the high yield and good quality of seed, the artificial wrap bag pollination should be applied in the beginning period of blooming of male plants and in the morning also. Fertilization and irrigation should be employed in the earlier earing period and the earing period of female plants, not suitabl durin