本文所研究的氮肥如未特殊说明，均指化学合成氮肥（CF-N）。
Without special instructions, this paper studied "nitrogen" is to synthetic fertilizer (CF-N).
粮食运输以及农业机器都需要石油，合成氮肥(2002年以来价格已经增长2倍)生产离不开天然气。
Oil fuels transportation and farm machinery, and natural gas is the basis of synthetic nitrogen production (prices have tripled since 2002).
但是现有控制释放氮肥因大多成本过高并且控制释放膜使用的膜材料多为难降解的合成高分子材料而限制了其大规模应用。
However, the application of controlled release fertilizer is limited by its high cost and environmental pollution brought from membrane materials of synthesized polymer with low degradation.
以不同品种春玉米为试验材料，研究氮肥施用量对春玉米子粒淀粉含量及淀粉合成关键酶活性的影响。
The effect of nitrogen dosage on starch content and key enzyme activity in composing starch in kernels of spring maize was studied.
施磷促进简单蛋白质向复合蛋白质转化，氮肥有利简单蛋白质合成。
The nitrogen improves the transformation from simple protein to compound protein and the phosphorus is benefit to the synthesis of simple protein.
高压自紧密封水加热器是用于小氮肥厂合成系统余热回收的一种新型设备。
The water heater with self-tight sealing under high pressure is a new type of equipment used for waste heat recovery from the synthesis system in the small nitrogenous fertilizer plants.
长期不施用氮肥会使玉米叶片内叶绿素的形成受到限制，不利于有机物质的合成；
Without N fertilizer for years, it will strain synthesis of chlorophyll in maize leaf, and it will go against the synthesise of organic matter. N fertilizer is in favor of the widening o…
长期不施用氮肥会使玉米叶片内叶绿素的形成受到限制，不利于有机物质的合成；
Without N fertilizer for years, it will strain synthesis of chlorophyll in maize leaf, and it will go against the synthesise of organic matter. N fertilizer is in favor of the widening o…
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