密植条件下玉米品种混播提高籽粒灌浆性能和产量

胡旦旦,李荣发,刘鹏,董树亭,赵斌,张吉旺,任佰朝

Mixed-Cropping Improved on Grain Filling Characteristics and Yield of Maize Under High Planting Densities

HU DanDan,LI RongFa,LIU Peng,DONG ShuTing,ZHAO Bin,ZHANG JiWang,REN BaiZhao

表2 密植条件下玉米品种混播对夏玉米籽粒灌浆参数的影响

Table 2 Effects of different mixed-cropping of maize varieties on grain-filling parameters

年份 Year 密度 Planting density 种植方式 Planting pattern R A B C Tmax (d) Wmax (g) Gmax (g·d-1) P (d) 2017 D1 SZD958 0.9965 31.29 63.80 0.15 28.27abc 15.65cd 1.15abc 40.87abc SDH605 0.9964 32.76 64.05 0.14 28.76a 16.38ab 1.18a 41.52ab M 0.9957 33.06 58.82 0.14 28.58ab 16.53a 1.18a 42.11a I 0.9965 32.67 65.17 0.15 28.65a 16.34ab 1.19a 41.20ab D2 SZD958 0.9973 28.76 64.58 0.15 27.68cde 14.38fg 1.08d 39.86bcd SDH605 0.9966 29.84 65.04 0.15 27.74cde 14.92ef 1.12bcd 40.01bcd M 0.9973 31.63 62.93 0.15 27.75bcde 15.82bc 1.18a 40.20abcd I 0.9969 31.25 68.92 0.15 28.09abcd 15.62cd 1.18a 39.83bcd D3 SZD958 0.9973 27.89 75.93 0.16 27.09e 13.94g 1.11cd 37.57e SDH605 0.9973 29.00 70.99 0.16 27.37de 14.50fg 1.13bcd 38.58de M 0.9974 30.30 74.29 0.16 27.72cde 15.15de 1.18a 38.66de I 0.9978 30.25 69.65 0.15 27.66cde 15.13de 1.16ab 39.12de 2018 D1 SZD958 0.9988 33.81 54.35 0.14 28.03ab 16.91b 1.20abc 42.34ab SDH605 0.9983 34.32 53.40 0.14 28.04ab 17.16ab 1.21ab 42.42ab M 0.9988 34.56 53.75 0.14 27.97ab 17.28ab 1.23a 42.21ab I 0.9989 35.13 53.27 0.14 28.33a 17.57a 1.23a 42.83a D2 SZD958 0.9977 29.78 53.21 0.14 27.53b 14.89d 1.07ef 41.81ab SDH605 0.9984 31.96 52.56 0.14 27.77ab 15.98c 1.14bcde 42.13ab M 0.9991 33.75 53.36 0.14 27.93ab 16.87b 1.20abc 42.39ab I 0.9992 33.79 51.32 0.14 27.94ab 16.89b 1.19abcd 42.80a D3 SZD958 0.9990 28.09 51.65 0.14 27.33b 14.05e 1.01f 41.62b SDH605 0.9988 29.51 54.12 0.14 27.63ab 14.75d 1.06ef 41.59b M 0.9994 31.42 54.41 0.14 27.85ab 15.71c 1.13cde 41.90ab I 0.9993 31.09 51.54 0.14 27.63ab 15.55c 1.11de 42.18ab