accumulation

Effects of surfactant on accumulation,distribution and elimination of lead and cadmium in Carassius auratus;

SDBS對鯽魚(yú)體內Pb、Cd的蓄積、分布與排出的影響

Study on the accumulation in Ruditapes philippinarum(Adams et Reeve) in spikedCd sediment;

菲律賓蛤仔對Cd加標沉積物的蓄積實(shí)驗

Research on Tolerance and Bioaccumulation of Seven Species (Cultivars) of Plants' on Lead.;

7種高等植物對鉛的耐性及其生物蓄積研究

Prediction model of volume and basal area growth rate for \%Cunninghamia lanceolata \%plantations.;

杉木人工林分蓄積和斷面積生長(cháng)率的預估模型

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.

以汪清林業(yè)局的20塊人工落葉松為例,對間伐林分的斷面積和蓄積進(jìn)行生長(cháng)趨勢分析,用普雷斯勒公式計算林分的平均生長(cháng)率,分析不同間伐強度對林分斷面積和蓄積的影響,結果表明:間伐林分在間伐初期的斷面積和蓄積小于未間伐林分,但隨著(zhù)林齡的增大,間伐林分斷面積和蓄積向未間伐林分漸近;間伐強度越大,年平均生長(cháng)率越大;方差分析表明,不同的間伐強度對林分斷面積和蓄積生長(cháng)的影響差異顯著(zhù)。

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 .

采用正交試驗設計,對楊樹(shù)人工林豐產(chǎn)栽培技術(shù)進(jìn)行8a的試驗研究,結果表明:4m×2m小區蓄積最高,4m×4m小區蓄積連年增長(cháng)量最高;含碳酸鹽黑鈣土的干旱地區施磷肥最好;整地深度50～60cm為宜;最佳組合為每穴施磷肥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.

進(jìn)行甲氨基阿維菌素苯甲酸鹽(甲維鹽)原藥對鵪鶉的急性和蓄積毒性試驗及該藥不同制劑對鵪鶉的急性毒性比較試驗。

BACKGROUND& AIM: To study the mutagenicity and cumulative toxicity of terbutryn.

背景與目的:研究特丁凈的致突變性與蓄積毒性。

Study on acute toxicity and cumulative toxicity of domestic cefquinome sulfate in mice.

為了研究國產(chǎn)硫酸頭孢喹肟對昆明小鼠的急性毒性和蓄積毒性,采用改良寇氏法測定國產(chǎn)硫酸頭孢喹肟的LD50;以劑量定期遞增法計算蓄積系數,并于給藥后第21天給予試驗組和對照組小鼠1 LD50的量,觀(guān)察各組小鼠對硫酸頭孢喹肟的耐受性。