种植方式与密度对糯玉米‘沪紫黑糯1号’的影响

研究了‘沪紫黑糯1号’不同种植方式(直播、育苗移栽、地膜覆盖)和种植密度(45 000、52 500、60 000、67 500、75 000株/hm2)时的农艺性状、产量和经济性状表现。结果表明:不同种植方式下‘沪紫黑糯1号’在产量方面差异显著,相同播期下地膜覆盖产量最高为13 986kg/hm2,熟期比其他种植方式早2d,最佳种植模式为地膜覆盖。不同种植密度下‘沪紫黑糯1号’在产量、茎粗、单株重、单株茎叶重、穗行数、穗粗方面差异显著,适宜种植密度为52 500～60 000株/hm2。

Waxy corn cultivar ‘Huziheinuo 1’ as influenced by planting patterns and densities

Field experiments with the cultivar ’Huziheinuo 1’ were carried out under different planting patterns(direct seeding,cultivation by setting seedlings,and plastic mulching)and various planting densities(45 000,52 500,60 000,67 500 and 75 000 plants/hm2)to study the effects of planting patterns and densities on the cultivar’s agronomic and yield performances and economic characters.The results showed that the yields of ’Huziheinuo 1’ were significantly different under different planting patterns.The best planting pattern was plastic mulching under which the yield was the highest(13 986 kg/hm2)and the maturity date was 2 days earlier than that under the other two patterns if the seeding date was the same.The cultivar’s yields,stem diameters,plant weights,stem and leaf weights per plant,row numbers of ear,and ear diameters were significantly different at different planting densities.The suitable planting density was 52 500-60 000 plants/hm2.