包膜尿素不同配比减施对土壤无机氮含量及玉米氮素吸收的影响
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Effects of Soil Inorganic Nitrogen and Nitrogen Absorbing by Maize Under the Reduced Application of Coated Urea at Different Proportions
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图6. 包膜尿素与普通尿素配比在经济效益、氮肥利用率和玉米产量上的拟合曲线 |
Fig. 6. Fitting curves of different ratios with resin coated urea on economic benefit, nitrogen fertilizer utilization rate and maize yield |
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