为了获得与牦牛生长发育性状相关的标记位点，提高牦牛生产性能，加快牦牛育种进程。
In order to obtain growth and development traits associated with the yak DNA marker, improve the performance and speed up the breeding process of yak.
在免耕直播和免耕抛秧栽培方式下，对18个杂交中稻组合的生长发育特点、产量构成性状进行了分析。
Characteristics of growth, traits of yield components were analyzed for 18 hybrid mid-season rice combinations under no-tillage direct seeding and no-tillage throwing.
通过大田试验研究比较了营养袋假植苗与一段式漂浮苗移栽后生长发育、叶绿体色素和经济性状的差异。
In this research, tobacco development, content of chlorophyll and economical character were considered between nourishment-bag temporary planting seedling and float seedling.
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