| In this research, Alfalfa seed production are analyzed. And the climate of Alfalfa seed production was found, too. High yield and quality of Alfalfa seed can be obtained in warm, enough light and rain or irrigation area. Profound technology should be applied in field management of Alfalfa seed production. The yield of Alfalfa seed could be enhanced, if reasonable irrigation combined with Phosphorus and Potassium was given in vegetative period. Reasonable irrigation may greatly enhance Alfalfa seeds' yield in vegetative, flowering and fruiting period. Good effect on Alfalfa fruiting rate could be found, if sun proofing from 10 o'clock to 14 o'clock combined with Phosphorus (140kg/hm2) and Potassium (60kg/hm2) were applied. Sun proofing from 10 o'clock to 14 o'clock combined with irrigation (900m3/hm2) in reproductive period is better than other groups in the no. of bees' visiting Alfalfa flower. Enough Alfalfa nectar yield could be obtained if reasonable irrigation (900m3/hm2) is given in reproductive period. Irrigation (1200m3/hm2) in reproductive period can maintain high yield of Alfalfa seed production. Alfalfa seed yield could have been enhanced some, if light (6000~300001ux) has been given for 10-14 hours everyday. The frequency of bee's visit could be enhanced if sucrose and something of yellow are applied in Alfalfa field. |
