Study On Planting Adaptability And Technology Of Alfalfa

During Chinese agricultural structural adjustment, the development of feed crop is one of the directions in which popularization first is clover. Clover industry should have more suitable species as guarantee. Alfalfa, which is marked with"the king of grazing", is one of the most important pea family grasses in Chinese. It has many merits such as suitability, products, good quality, stress resistance, growth speed, etc. It could also be used for environmental greening and food industry, especially the leaf protein of alfalfa is a good material for medical and health foodstuff. Low temperature is one of the mostly serious elements to limit alfalfa industrial development and it is very easily happened about freezing injury and dying phenomenon in northern cold areas. Therefore it is urgently need to breed alfalfa species with capability of cold resistance. Cold resistance was one kind of genetic characters to adapt low temperature during a long period, cold resistant gene only expressed under conditions such as low temperature, short duration of sunshine, water stress and make the plants develop the capability of cold resistance.The test of ten species of Alfalfa was conducted in order to study adaptability and weeds controling of Alfalfa in Qianguo,Jilin in 2005~2007.Ten species of leguminous grasses,Medicago varia cv. Gannong No.1,Medicago varia cv. Gannong No.2,Medicago sativa cv. Zhaodong,Medicago sativa cv. Xinjiang Daye,Medicago sativa cv.Aohan,Medicago sativa cv.Caoyuan No.1,Medicago sativa cv. Kexueyuan,Medicago sativa cv.American,Medicago sativa cv.Russian,Medicago sativa cv.Gongnong No.1.The results showed that their production performance and nutritive value were high.Experiments with 3 kinds of compounds herbicides were applied to control weeds in order to efficiently eradicate it in the Alfalfa grassland.The results showed that the aboveground part of drown plant withered and died, the growing points were necrosis, the control efficiency of high,medium,low were partly 90%,85%,65%. The Alfalfa yield of high,medium,low partly decreased 43.9% , 12.2% , 9.8%. The Alfalfa height of high,medium,low partly decreased 35.1%,21.1%,10.5%。...