1996年,西北农业大学从澳大利亚引进一批一年生苜蓿种子,经过近两年的大范围试验示范,表现较为突出。 澳大利亚一年生苜蓿为须根系,一年生,可春秋季播种,播后60—100天开花,每花可结4—5粒种子,果实为有刺或无刺的球形,种子为肾形,通过根系固氮每年可为土壤提供70—80千克/公顷氮素。春季产草量约为10吨/公顷。 澳大利亚一年生苜蓿在国内试种 In 1996, Northwest Agricultural University introduced a batch of annual alfalfa seeds from Australia. After nearly two years of large-scale experiment and demonstration, the performance was outstanding. Annual Australian annual alfalfa is a fibrous root system. Annuals are sown in spring and autumn. Flowers are sown for 60-100 days after sowing. Four to five seeds per flower can be harvested. The fruit is spiny or stingless. The seeds are kidney-shaped, 70-80 kg / ha nitrogen can be supplied to the soil each year. Spring grass production is about 10 tons / ha. Australian annual alfalfa planted in the country