Methods24 adult male SD rats were randomly divided into soybean group and meat group according to randomized block design.

方法按配伍组设计方法将24只雄性SD大鼠随机分成豆组和肉组。

By randomized block design , the effect of the applicative way and length of straw on the main environmental factors of soil in greenhouse was studied.

采用随机区组设计，研究了稻草施入方式和施入长度两因素对温室土壤主要环境因子的影响。

A randomized block design was adopted to study growing characteristics, winter-survival rate and hay yield of alfalfa sown in dryland-farming regions of southern Ningxia province on different dates.

采用随机试验设计方法，在宁南旱作农业区进行了不同播期对紫花苜蓿出苗率、生长发育、越冬率和产草量影响的研究。