两个糯玉米品种主要农艺性状与产量的比较研究

研究了“津黑糯1号”和“垦粘1号”两个糯玉米品种在4个不同种植密度下的主要农艺性状和产量。结果表明：半紧凑型并接近紧凑型的“津黑糯1号”玉米是以株型紧凑、增加种植密度、提高群体产量实现高产的。在种植密度为42000株／hm2时，“津黑糯1号”具有较大的叶面积指数，能在生育期保持较大的群体光合功能，获得高产；其穗行数、行粒数、穗粗、穗重、穗长、秃顶长等指标均较理想。测产结果表明，种植密度为42000株/hm2左右时，种植“津黑糯1号”能获得最佳经济产量和效益。

Comparative Studies on Main Agronomic Traits and Yields of Two Waxy Corn Varieties

The effects of four densities on main agronomic traits and yield of crop Jinheinuo No.1 and Kennian No.1 were studied. The results show that the hemicompact and compact crop Jinbeinuo No.1 achieved higher yields by its compact conformation, higher density and larger population. When the planting density was 42 000 plants/hm2, Jinheinuo No. 1 has the larger leaf area index and the stronger population photosynthetic function at the growth season to achieve the high yield, and also the number of ear-to-row, grain number per row, ear diameter, ear weight, ear length, and bald tip length of Jinheinuo No. 1 are perfect. In conlusion, in the planting density of 42 000 plants/hm2, Jinheinuo No. 1 had the optimum yields and benefits.