... 磷变质处理 phosphorus modification treatment 磷的作用 effect of phosphorous 磷含量 phosphorus ...
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The low rate of sowing, wide space between rows, proper amount of nitrogen and phosphorous and a timely irrigation also had good effect on seed production of sainfoin.
低播量、宽行距、施适量的氮磷肥料、适时灌溉对红豆草种子生产亦有良好的效果。
Simulated wastewater was used for teeing phosphorous removing effect and the factors of influence of SBR system.
采用人工合成废水，考察了SBR生物除磷工艺的除磷效果和影响除磷效果的一些因子。
The low rate of sowing, wide space between rows, proper amount of nitrogen and phosphorous and a timely irrigation also had good effect on seed pr...
低播量、宽行距、施适量的氮磷肥料、适时灌溉对红豆草种子生产亦有良好的效果。
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