. cao tian nong zuo zhi wen ti. botany. 9 // 13 /J /7 19 21 23 å°æ A I ï¼ Jill 7 9 II 13 15 17 19 21 23 å°æ 9 ã ï¼ 3 15 17 W 21 23 å°æ. 9 II i3 15 17 W Zi 23 å°æ§ å7å¬å°éº¥ç°ä¸å深度çå温ä¸æå¤éçåå¨ï¼1948å¹´6æï¼ 1.æ帶éï¼2.èåå §ï¼A. 5å米深å¤ï¼B. 10å米深å¤ï¼ B. 15å米深å¤ï¼r. 20å米深å¤ã å表水份çè¸ç¼,å¨æ帶éçç°å°ä¸ï¼ç §å¸¸ä¹æ¯é¡¯è为ä½çã è¿å¯¹äºå¨ä»æ¥å-£ç°éå·¥ä½å¼å§å°å°çæ¶ï¼ä¹å°±æ¯å¯¹äºå¨ä»4æ ä¸æ¬å°5ææ«æ¶çæ¥æ-ä½ç©ï¼å¯å ·æçæ ¼å¤çæä¹ã .æ ¹æ®æåçè¦å¯ï¼è¿æ®µæ¶æå §ç±äºè¸ç¼å壤ææ失æç水份平 åæ¯(毫米ï¼ï¼ å¼éèåå § æ帶é 1947å¹´ 1948å¹´ 誦年 ä¼éå°å¨ä»æ©å·èå°å
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbotany
