soil phosphorus level 水位消落区
plasma phosphorus level 血浆磷水平
available phosphorus level 供磷水平
inorganic phosphorus level 无机磷浓度
soil test phosphorus level 土壤测试磷
Cotton synthesises more GA, IAA to alleviate the phosphorus stress, high phosphorus level improves the content of Z.
棉株合成较多的GA、IAA缓解低磷胁迫，高磷促进Z含量的提高。
Serum phosphorus level increased as dietary phosphorus increased and decreased as dietary calcium to phosphorus ratio increased.
血清磷随日粮磷增加而增加，随日粮钙磷比例增加而下降。
With the increasing of the light period length, the growth rate and cell density rose gradually and exogenous phosphorus level declined rapidly in the water.
延长光照时间能加快微囊蓝细菌的生长速率和提高微囊蓝细菌的密度。
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