不同种植密度对红花产量及农艺性状的影响

目的]探索红花在新疆主产区塔城地区的最佳种植密度,优化当地配套栽培技术.方法]采用随机区组设计,研究不同种植密度对红花株高、单株有效果球数、每果球粒数等主要农艺性状以及产量性状的影响.结果]随着种植密度的增加,株高、单株有效果球数呈降低趋势;每果球粒数、千粒重在种植密度为2.1×104株/667 m2时最大;红花籽粒产量与千粒重达极显著正相关与每果球粒数呈显著正相关,种植密度与单株有效果球数达极显著负相关、与单株产量达显著负相关;不同种植密度,产量差异显著.结论]在新疆塔城地区,红花适宜种植密度为1.8×104～2.1×104株/667 m2.

Effects of Different Planting Density on Yield and Agronomic Traits of Safflower (Carthamus tinctorius L.)

Objective]The optimal planting density of safflower in Tacheng area of Xinjiang was tested so as to optimize the high-yield cultivation techniques.Method]In the field test with random block design,the influence of different planting density on the plant height,number of effective cones per plant,number of grains per cone,1 000 grains weight and seed yield per plant.Result] The result indicated that plant height,number of effective cones per plant obviously decreased along with the increase of planting density;number of grains per cone,1 000 grains weight was maximum with the planting density of 21 000/667 m2.Correlation analysis indicated that there are significant positive correlation between grains yield and 1000 grains weight,number of grains per cone;correlation between planting density and number of effective cones per plant,seed yield per plant are significantly negative.There was significant difference of grains yield in different planting density.Conclusion]The suitable planting density was 21 000/667 m2 in Tacheng area of Xinjiang.