氮肥与密度互作对单粒精播花生根系形态、植株性状及产量的影响

刘俊华, 吴正锋, 沈浦, 于天一, 郑永美, 孙学武, 李林, 陈殿绪, 王才斌, 万书波

Effects of nitrogen and density interaction on root morphology, plant characteristic and pod yield under single seed precision sowing in peanut

Jun-Hua LIU, Zheng-Feng WU, Pu SHEN, Tian-Yi YU, Yong-Mei ZHENG, Xue-Wu SUN, Lin LI, Dian-Xu CHEN, Cai-Bin WANG, Shu-Bo WAN

表2 氮肥和密度互作对花生根表面积的影响

Table 2 Effects of the interaction of nitrogen fertilizer and density on root surface area in peanut

氮肥水平 Nitrogen level 单位面积根表面积 Root surface area of unit area (cm2 pot-1) 单株根表面积 Root surface area per plant (cm2 plant-1) 种植密度 Plant density 2018 2019 2018 2019 花针期 FS 结荚期 PS 收获期 HS 花针期 FS 结荚期 PS 收获期 HS 花针期 FS 结荚期 PS 收获期 HS 花针期 FS 结荚期 PS 收获期 HS NO D1 491.2 c 666.8 be 734.2 a 1008.4 bed 1227.3 a 739.7 be 491.2 abc 666.8 a 734.2 a 1008.4 a 1227.3 ab 739.7 a D2 733.9 abc 1288.6 a 787.5 a 1671.6 ab 1861.8 a 783.3 be 366.9 be 644.3 a 393.8 b 835.8 abc 930.9 b 391.7 be D3 1008.4 a 1062.2 ab 818.2 a 1691.9 ab 2183.7 a 1001.2 ab 336.1 be 354.1 ab 272.7 b 564.0 c 727.9 b 333.7 c N1 D1 558.2 be 476.3 c 607.5 a 946.5 cd 1960.0 a 524.6 c 558.2 ab 476.3 ab 607.5 a 946.5 ab 1960.0 a 524.6 abc D2 835.4 ab 839.2 abc 741.0 a 2043.9 a 1888.9 a 786.5 be 417.7 abc 419.6 ab 370.5 b 1021.9 a 944.5 b 393.3 be D3 844.0 ab 838.2 abc 629.9 a 1793.9 a 2069.3 a 1180.4 a 281.3 c 279.4 b 248.0 b 598.0 be 689.8 b 393.5 be N2 D1 631.1 be 581.4 be 776.9 a 729.9 d 1103.4 a 759.5 be 631.1 a 581.4 ab 776.9 a 729.9 abc 1103.4 ab 759.5 a D2 634.8 be 656.6 be 772.1 a 1517.0 abc 1597.7 a 1185.6 a 317.4 c 328.3 ab 386.1 b 758.5 abc 798.9 b 592.8 ab D3 996.9 a 857.1 abc 911.0a 1512.6 abc 1584.3 a 882.1 abc 332.3 be 285.7 b 303.7 b 504.2 c 528.1 b 294.0 c 氮肥 Nitrogen (N) ns ns ns ns ns ns ns ns ns ns ns ns 密度 Density (D) ** ** ns ** ns ** ** ** ** ** ** ** 氮肥x密度NxD ns ns ns ns ns * ns ns ns ns ns ns