【正文】
ageV6 V1 2 VT R3 R5 R601002003004005002022 2022 圖 不同高產玉米品種地上部干物質積累動態(tài) Grow th s ta geV6 V 12 VT R3 R5 R6Dry weight of root( g plant1)0510152025303540Z D958DH661Gro w th s tag eV6 V12 VT R3 R5 R60510152025303540ZD9 58DH661圖 不同高產玉米品種根系干物質積累動態(tài) 2022 2022 T he rati o of roo t to w hole p lant w eigh t (% )0 2 4 6 8 10 12 14 16 18 20Growth stageR6R5R3VTV 12V6Z D958DH661The ratio of root to whole plant weight (%)0 2 4 6 81012141618Growth stageV6V12VTR3R5R6ZD958DH661T he rati o of roo t to whole p l ant weigh t (% )0 2 4 6 8 10 12 14 16 18Growth stageV6V 12VTR3R5R6Z D95 8DH 661圖 不同高產玉米品種根系干重占整株干重的比例( %) 2022 2022 DH661將更多的碳水化合物分配到根系中 Gr ow t h s t ag eV6 V 12 VT R3 R5 R6Root /shoot ratio0. 000. 050. 100. 150. 200. 25ZD958DH66 1Gr ow t h s t ageV6 V1 2 VT R3 R5 R60. 000. 050. 100. 150. 200. 25圖 不同高產玉米品種根冠比的動態(tài)變化 2022 2022 根冠比 鄭單 958 DH661 Z D 9 5 8Dry w eight of root (g/pl ant )0 2 8 10 12 14 16 18200180160140120100806040200v6v 12vTF3R5R6D H6 6 1Dry w eight of root (g/pl ant )0 5 10 15 20 25 30 35Depth of soil layers (cm)200180160140120100806040200v6v 12vTF3R5R6圖 不同生育時期根系在土層中的分布 根系分布 r oo t w ei gh t of di f f er en t l ay er s0 10 20 30 40Growth stageVTR3R60 2020 4040 6060 10 010 0 20 0r oo t w ei gh t of di f f er en t l ay er s0 5 10 15 20 25Growth stageVTR3R60 2020 4040 6060 10 010 0 20 0DH661 ZD958 圖 不同高產玉米品種根系