Abstract:

By comprehensive appreciating method of fuzzy mathematics, comprehensive evaluation was made to new forage sorghum hybrids tested in various regions in 2003. The results showed among 6 new forage hybrids Jincao 1, Jumbo were significantly superior to the control Wancao 2 in forage yield per hectare, yield characters and comprehensive characters, such as disease resistance, lodging resistance and plant height. Their performance were superior by evaluation criterion. Value of their comprehensive index increased by 17.51% and 15.95% respectively. Comprehensive characters of Liaocao 1, Superdan were similar to the control and evaluated as relative or mediocre，Ruibao 1, Ruibao 2 were inferior to the control and evaluated as poor. Comprehensive appreciating method of fuzzy mathematics reflected objectively comprehensive characters and overcame shortcomings of evaluation by yield index. Also it had practical meaning to evaluation and release of new varieties.