随着产量增加，需氮量也要增加。
The amount of nitrogen needed will increase as yield increases.
试验结果表明，沿优63的增产潜力显著大于汕优6号，但需氮量却比汕优6号要低。
We further demonstrated that a high grain yield can be obtained with SHAN-YOU 63 cultivated under low or middle nitrogen supply levels.
试验结果表明，沿优63的增产潜力显著大于汕优6号，但需氮量却比汕优6号要低。
We further demonstrated that a high grain yield can be obtained with SHAN-YOU 63 cultivated under low or middle nitrogen supply levels.
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