The Investigation On The Introduction Of Herbage And Forage Crop In Agricultural Area Of Tibetan

In Tibet，the production of natural grassland is quite little, the area of artificial pastureland is verysmall, the strain of herbage is unitary, the overload on natural grassland is serious, the naturalgrassland is gradually deteriorating so that the fine herbage is insufficient. However, the fine herbage isnot only the basic for the survival of livestock, but also the material guarantee to improve the livestockproduction with Tibetan characteristic. Therefore, introducing some high quality herbage strains andcultivating some artificial pasturelands are the nutrition resources of Tibetan livestock. The key-point inthe Tibetan pasture production is to deal with the forage shortage during winter-spring and bad years.Moreover, whatever to cultivate a artificial pastureland or to supplemental seeding for natural grassland,both of them are need some fit herbage strains. Therefore, introduction and chose out some high qualityherbage strains which suitable growing in Tibetan agricultural area should be a successful way to solvethe herbage strain shortage.The present research was carried out in the Quniba station, which lies in the Valley Region of Tibetwith an altitude of3780m. The current study compared the local variety herbage, fescue (Festuca L.),with six introduced breeds, corn (Zea mays), oats (Avena fatua L.), perennial ryegrass (Lolium perenneL.), green wheat (Triticum), green amaranth (Amaranthus viridis L.) and red amaranth (Amaranthus.paniculatus L.) in a completely random block design experiment. The research mainly measured thephenological phase, plant height, yield (fresh and dry), crude protein (CP), acid detergent fiber(ADF)and neutral detergent fiber(NDF) of these breeds and analyzed all the results of above factors amongthem.The results of current study showed that all of six introduced breeds had higher yield, plant heightand CP than local variety, and the advantage was obvious. All the introduced breeds were sown on24thMay,2009and emerged shipshape in middle of June. Until middle of July, oats, green wheat and localfescue were earlier than others to enter the tillering stage. The fresh yield of corn reached125.7t/hm2,which was obviously higher than others. Green wheat grown quickest and the growth period of it only27days, therefore, it can be sown twice in one year and the dry matter yield (30t/hm2) will catch up tocorn which had the highest dry matter yield. During the growing rate measurement, green wheat shownhighest speed (2.19cm/d), it had significant differences with others (P<0.01), following it were oats andgreen amaranth (1cm/d). The content of CP was arranged from high to low as: ryegrass, red amaranth,oats, corn, green amaranth and local fescue. The ADF content ranged from26.71%to43.63%，shownsignificant different (P<0.05)among breeds, in which the local fescue had highest content (40.14%) andoats had lowest content (26.71%).Therefore, the introduced breeds were more suitable grow in the Valley Region of Tibet, suppliedgist for the herbage strain used in artificial pastureland, and could be utilized and popularized in thisarea.