【摘要】 试验以哲蓖1号为研究材料,通过不同生育时期对各级果穗籽粒的测量,明确了哲蓖1号在不同种植密度下主茎果穗籽粒、一级果穗籽粒、二级(其它)果穗籽粒、单株籽粒产量、群体籽粒产量积累形成规律.种植密度1.8、3.6万株/hm2的其群体籽粒产量在9月25日达到最大,种植密度2.7万株/hm2的在9月20日达到最大,分别为1638.07、2094.83、1894.57kg/hm2;随着灌浆时间的增加,群体籽粒产量日积累量随着开花灌浆天数的增加先增加后减少;3个种植密度下的哲蓖1号群体籽粒产量日积累量在开花灌浆35天前后均达到最大,1.8、2.7、3.6万株/hm2日增量分别为53.16、65.96、66.48kg/hm2.更多还原

【Abstract】 The experiment uses zhe castor No.1 as the research materials, by measuring all levels of average grain in different growth period, has cleared the zhe castor No.1’s main stems ear grain, level 1 ear grain, level 2(other)ear grain, the grain yield per plant and the grain yield of the group accumulation regularity under different planting density. The maximum yield of 18000 and 36000 strains of /hm2 reached the maximum in September 25 th, the planting density of 27000 strains of /hm2 reached the maximum in September 20 th, respectively 1638.07, 2094.83, 1894.57kg/hm2; with the increase of the filling time, yield accumulation increased with the increase of the filling time to blossom first increased and then decreased; the three planting density of zhe castor No.1’s grain yield accumulation are maximum in flowering grouting before and after 35 days, the daily increment were 53.16, 65.96, 66.48 kg /hm2 of 18000,27000,36000 strains of /hm2.更多还原