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3 氮肥和密度互作对花生根体积的影响

Table 3 Effects of the interaction of nitrogen and density on root volume in peanut

氮肥水平 Nitrogen level 种植密度 Plant density 单位面积根体积Root volume of unit area (cm3 pot-1) 单株根体积Root volume per plant (cm3 plant-1) 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 N0 D1 12.3 c 30.6 b 36.5 ab 23.3 b 24.8 b 17.6 cd 12.3 ab 30.6 a 36.5 a 23.3 ab 24.8 bc 17.6 a D2 25.6 b 54.9 a 37.4 ab 34.4 ab 45.0 ab 20.7 bcd 12.8 ab 27.4 ab 18.7 c 17.2 ab 22.5 bc 10.4 c D3 38.3 a 55.6 a 42.0 ab 37.0 ab 50.9 a 23.8 abc 12.8 ab 18.5 abc 14.0 c 12.3 b 17.0 bc 7.9 c N1 D1 17.4 bc 26.5 b 28.4 b 20.9 b 40.9 ab 15.4 d 17.4 a 26.5 ab 28.4 b 20.9 ab 40.9 a 15.4 ab D2 26.4 b 44.1 ab 41.3 ab 52.8 a 44.7 ab 21.2 bcd 13.2 ab 22.0 abc 20.6 c 26.4 a 22.3 bc 10.6 c D3 26.3 b 38.5 ab 34.9 ab 40.5 ab 47.2 ab 28.6 a 8.8 b 12.8 c 14.0 c 13.5 b 15.7 c 9.5 c N2 D1 10.1 c 31.1 b 35.5 ab 19.2 b 30.6 ab 17.8 cd 10.1 b 31.1 a 35.5 ab 19.2 ab 30.6 ab 17.8 a D2 19.0 bc 33.5 b 38.4 ab 33.2 ab 40.0 ab 27.5 ab 9.5 b 16.7 bc 19.2 c 16.6 ab 20.0 bc 13.8 b D3 28.6 ab 44.9 ab 42.2 a 37.1 ab 41.8 ab 24.1 abc 9.5 b 15.0 bc 14.1 c 12.4 b 13.9 c 8.0 c 氮肥 Nitrogen (N) ns ns ns ns ns ns ns ns ns ns ns * 密度 Density (D) ** ** ns ** ns ** ns ** ** ** ** ** 氮肥×密度 N×D ns * ns ns ns ns ns ns ns ns ns ns