小麦新品种百农207适宜播期播量组合研究

Study on appropriate combinations of sowing date and seeding amount for new wheat cultivar Bainong 207 in Henan province

设置10月1日225万/hm^2(A1)、10月8日300万/hm^2(A2)、10月15日375万/hm^2(A3)、10月22日450万/hm^2(A3)、10月29日525万/hm^2(A5)和11月5日600万/hm^2(A6)共6个播期播量组合,探讨不同播期播量组合对小麦新品种百农207生育期、株高、穗部性状、产量构成因素及产量的影响,确定百农207适宜播期播量组合.结果表明:随着播期逐渐推迟,百农207营养生长期和全生育期明显缩短,对小麦生殖生长期影响较小.不同生育时期的株高以A1、A2和A3较高,A6最低.随着播期推迟,各播期播量组合穗长、小穗排数、结实粒数和不结实数呈降低趋势;穗长、小穗排数和结实粒数均以A1、A2和A3较高,显著高于A5和A6(P<0.05);A5、A6和A1不结实数较少,结实率较高.A2、A1和A4为适宜播期播量组合,产量三要素基本或完全符合"四四四"高产结构模式,产量在10 500 kg/hm^2左右.

In order to select the appropriate combination of sowing date and seeding amount for new wheat variety Bainong 207.The experiment was conducted with six treatments including October 1 and 225×104/hm^2(A1),October 8 and 300×104/hm^2(A2),October 15 and 375×104/hm^2(A3),October 22 and 450×104/hm^2(A4),October 29 and 525×104/hm^2(A5),and November 5 and 600×104/hm^2(A6),to study the effect of different combination of sowing date and seeding on grow stage,plant height,yield component and yields of Bainong 207.The results showed as follows:With the sowing date postponed,the vegetative growing stage and the whole growth stage of Bainong 207 became significantly shorter,but that had little effect on the vegetative growing period.In different growth stage,the plant height were higher in A1,A2 and A3,and lowest in A6.In different combination of sowing date and seeding amount,the panicle length,the number of spikelets and grains per spike decreased with the sowing date postponed,the panicle length,number of spikelets and grains per spike in A1,A2,and A3 were significantly higher than that in A5 and A6;In A5,A6 and A1 treatments,no grain-bearing number of were less,seed setting rate was higher.A2,A1 and A4 treatments were the appropriate combination of sowing date and seeding amount for new wheat variety Bainong 207,the number of spike,the grains per spike 1000-grain weight basically or entirely complied with the“four four four”model of high yield structure,which could realize the yield of about 10 500 kg/hm^2.