施肥实验结果 (IMAGE) Science China Press Caption (a) 不同施肥条件下粟的种子和叶片的δ15N值;(b) 粟的种子和叶片δ15N值的线性关系 Credit ©《中国科学》杂志社 Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.