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5 氮肥和密度互作对花生植株性状的影响

Table 5 Effects of the interatcion of nitrogen fertilizer and density on plant characteristics in peanut

年份 Year 氮肥水平 Nitrogen level 种植密度 Plant density 主茎叶片数 Leaves of main stem 侧枝数 Number of lateral branches 主莲尚 Main stem height (cm) 侧枝长 Lateral branch length (cm) 第一节间粗 First internode thickness (mm) 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 花针期 FS 结荚期 PS 收获期 HS 2018 NO D1 12.0 a 25.0 ab 26.3 be 21.7 a 42.5 a 35.3 a 19.3 abc 43.5 a 53.6 a 21.9b 53.1 b 57.9 ab 7.8 a — 13.7 a D2 11.3 a 24.3 ab 23.7 c 15.7 b 22.3 cd 19.0 cd 18.6 be 54.5 a 52.6 a 20.2 b 67.6 a 54.1 ab 7.0 abc — 9.9 b D3 11.0a 22.0 b 26.3 be 9.8 c 18.3 cd 18.7 cd 23.0 a 48.3 a 51.1 a 24.6 a 50.1 b 57.1 a 5.9 be — 8.8 b N1 D1 11.7a 25.3 ab 30.0 a 24.7 a 25.3 cd 26.0 abc 18.3 c 46.1 a 50.7 a 19.9 b 54.9 ab 69.0 a 7.9 a — 13.4 a D2 11.2a 25.3 ab 24.7 c 16.8 b 39.0 ab 23.3 bed 20.5 abc 48.8 a 56.0 a 21.4 b 55.2 ab 59.4 ab 6.5 abc — 9.1 b D3 10.7 a 22.3 b 23.0 c 14.3 b 16.7 d 20.0 bed 17.7 c 47.0 a 50.6 a 19.3 b 51.2 b 53.3 ab 5.6 c — 8.0 b N2 D1 10.5 a 27.0 a 29.3 ab 17.5 b 29.0 be 31.0 ab 22.5 ab 45.6 a 54.0 a 21.6 b 58.4 ab 60.7 a 7.4 ab — 14.8 a D2 11.2a 24.0 ab 25.3 c 15.2 b 19.7 cd 24.0 abed 18.7 be 42.1 a 52.1 a 19.3 b 49.4 b 57.9 ab 5.7 c — 8.4 b D3 10.8 a 22.7 ab 23.0 c 13.2 be 23.3 cd 12.7 d 20.4 abc 50.3 a 45.9 a 21.8b 59.9 ab 47.8 b 7.3 ab — 8.4 b 氮肥 Nitrogen (N) ns ns ns ** ns ns ns ns ns ns ns ns ns ns 密度 Density (D) ns * ** ** ** ** ns ns ns ns ns ns ns ** 氮肥X密度NxD ns ns * ns ** ns ** ns ns ns ** ns ns ns 2019 NO D1 15.0 a 19.0 a 21.7 ab 18.3 ab 18.0 bed 19.3 ab 21.3 a 33.5 ab 39.6 a 26.7 a 34.8 be 42.8 a 7.3 a 6.6 cd 6.8 ab D2 13.7 a 19.0 a 19.0 b 11.7b 14.0 cd 16.3 ab 22.5 a 34.1 ab 31.7 be 23.7 ab 36.4 b 34.4 c 6.5 ab 7.1 abed 6.5 abc D3 12.3 a 16.7 b 20.0 ab 10.3 b 11.3 d 13.3 b 19.6 a 31.0b 38.0 ab 22.1 b 32.3 c 40.0 ab 5.5 b 6.0 d 5.8 c N1 D1 14.0 a 18.5 ab 22.7 a 21.0 a 28.5 a 26.0 a 21.4 a 35.1 ab 36.3 abc 23.2 ab 37.5 b 41.1 ab 6.4 ab 8.0 ab 6.5 abc D2 13.7 a 18.7 ab 19.7 ab 16.7 ab 21.0 abc 18.7 ab 23.1 a 35.1 ab 35.5 abc 26.2 a 37.4 b 36.3 be 7.2 a 7.0 abed 6.5 abc D3 13.0 a 17.3 ab 19.7 ab 16.3 ab 12.7 cd 14.7 b 20.7 a 34.5 ab 32.8 be 21.5 b 37.5 b 36.5 be 7.2 a 6.8 cd 6.5 abc N2 D1 14.7 a 19.5 a 20.0 ab 22.7 a 24.5 ab 22.7 ab 21.8 a 33.6 ab 30.7 c 24.0 ab 41.3 a 34.6 c 6.4 ab 8.2 a 7.3 a D2 13.7 a 19.3 a 20.0 ab 20.0 a 19.0 bed 18.7 ab 22.0 a 38.1 a 37.0 abc 23.1 ab 40.7 a 42.0 a 6.7 ab 7.3 abc 6.4 abc D3 14.7 a 19.5 a 19.3 b 11.7b 17.5 bed 14.7 b 21.0 a 36.6 ab 37.4 ab 24.1 ab 41.1 a 39.5 abc 6.6 ab 6.8 bed 6.2 be 氮肥 Nitrogen (N) ns ns ns ns ns ns ns * ns ns ** ns * * ns 密度 Density (D) ns ns ns ** ** * ns ns ns * ns ns ns * ns 氮肥X密度NxD ns ns ns ns ns ns ns ns * * ns * ns ns ns