单粒精播模式下不同种植密度对花生物质分配及产量的影响

Effect of Different Planting Density on Material Distribution and Yield under Single Seed Precision Sowing Mode

为探明单粒精播条件下花生的个体发育和群体结构的协调发展以及对产量的影响,以‘宁泰9922’花生为试验材料,研究花生不同密度单粒精播处理与常规大田生产之间的差异。结果表明:单株果鲜重与分枝数、有效果数、绿叶鲜重、茎枝鲜重、根鲜重、根冠比呈极显著正相关,与叶龄、有效枝数呈显著正相关,与结实范围呈极显著负相关,与株高、侧枝长呈显著负相关。增加密度显著降低了单株结果数和单株果重,但由于群体的优势,高密度处理的产量并未降低。

In order to determine the effect of single seed precision sowing on the individual development,population structure coordinated development and yield of peanut,‘Ningtai9922’peanuts were used as the experimental material to study the diffence between single seed precision sowing treatment under different density and conventional field production.The results show that:The fresh weight per plant was significantly positively correlated with branch number,effective number,fresh leaf weight,stem weight,root fresh weight,root-shoot ratio,positively correlated with leaf age and effective branch number,significantly negatively correlated with seed setting range,negatively correlated with plant height and lateral branch length.The number of fruit per plant and the weight of fruit per plant decreased significantly with the increase of density,but due to the advantages of the population,the yield of high-density treatment did not decrease.