关键词: 小鼠, 小鼠, 透明标本, 骨骼, 形态学

Abstract:

In order to decrease period culture in nursery and to prolong its growth in field, together with improving the yield of unit area and increasing the speed of propagation, we did the following experiments about bare-root seedling of sugarcane transplanted in field. The group-planting seedlings of ROC22 were viru-free by tip culture..we compared the effects of water and fertilizer before transplantion , time of trantplantion, way of trantplantion and the condition of illumination to survival rate and growth when single bare-root seedling transplanting in field. The results showed that , when controled the water and fertilizer ten day before transplanting,the seedling whose survive rate were 89.5 percent which reached very significance level than contract and grew well after survive when controlled the water and fertilizer ten days before transplanting; The more quickly transplanting , the more higher survival rate within four hurs when the group seedling separated into single plants., in the ordinary cannot beyond four hours; when trantplanted in field, it is better in 2-3 centimeter depth, , the survival rate would decrease less than 2 centimeter, and more 3 centimeter would reduce tiller or on tiller; The seedling whose survival rate can reach 95.8 to 97.2 percnet when used the 70 percent shady net. In other ways, such as transplanting in spring or transplant in water-field like rice, can increase the survival rate of bare-root seedling of sugarcane transplanting in field. In all, with the control of water, fertilizer, light shad and the depth of tansplanting, we can transplant some vigorous and strong resistance group-planting seedling to field.