Effects of surfactant on accumulation,distribution and elimination of lead and cadmium in Carassius auratus;
SDBS对鲫鱼体内Pb、Cd的蓄积、分布与排出的影响
Study on the accumulation in Ruditapes philippinarum(Adams et Reeve) in spikedCd sediment;
菲律宾蛤仔对Cd加标沉积物的蓄积实验
Research on Tolerance and Bioaccumulation of Seven Species (Cultivars) of Plants' on Lead.;
7种高等植物对铅的耐性及其生物蓄积研究
Prediction model of volume and basal area growth rate for \%Cunninghamia lanceolata \%plantations.;
杉木人工林分蓄积和断面积生长率的预估模型
With Larix olgensis plantation of the WangQing Forest Bureau as an example,the paper studied the growth trend of the basal area and volume,calculated the average growth rate of the plantation by pressler formula, analyzed the effects of thinning on the basal area and volume.
以汪清林业局的20块人工落叶松为例,对间伐林分的断面积和蓄积进行生长趋势分析,用普雷斯勒公式计算林分的平均生长率,分析不同间伐强度对林分断面积和蓄积的影响,结果表明:间伐林分在间伐初期的断面积和蓄积小于未间伐林分,但随着林龄的增大,间伐林分断面积和蓄积向未间伐林分渐近;间伐强度越大,年平均生长率越大;方差分析表明,不同的间伐强度对林分断面积和蓄积生长的影响差异显著。
The results showed that the volume of 4m×2m area was the highest and the current annual increment of 4m×4m per hectare was the highest .
采用正交试验设计,对杨树人工林丰产栽培技术进行8a的试验研究,结果表明:4m×2m小区蓄积最高,4m×4m小区蓄积连年增长量最高;含碳酸盐黑钙土的干旱地区施磷肥最好;整地深度50～60cm为宜;最佳组合为每穴施磷肥150g、4m×2m密度、整地50～60cm。
The result of cumulative toxicity testing indicated that emamectin benzoate was moderately cumulative, changes in body weight, ap.
进行甲氨基阿维菌素苯甲酸盐(甲维盐)原药对鹌鹑的急性和蓄积毒性试验及该药不同制剂对鹌鹑的急性毒性比较试验。
BACKGROUND& AIM: To study the mutagenicity and cumulative toxicity of terbutryn.
背景与目的:研究特丁净的致突变性与蓄积毒性。
Study on acute toxicity and cumulative toxicity of domestic cefquinome sulfate in mice.
为了研究国产硫酸头孢喹肟对昆明小鼠的急性毒性和蓄积毒性,采用改良寇氏法测定国产硫酸头孢喹肟的LD50;以剂量定期递增法计算蓄积系数,并于给药后第21天给予试验组和对照组小鼠1 LD50的量,观察各组小鼠对硫酸头孢喹肟的耐受性。