不同播期和密度对农大花103农艺性状及产量的影响

Effect of Sowing Date and Density on Yield and Agronomic Characters of Nongdahua 103

为了探明花生新品种农大花103在河南地区的最适播期和最佳种植密度,分别研究了播期和密度条件对该品种产量及主要农艺性状的影响。播期试验结果表明,在5月10—30日播种的农大花103的叶绿素含量、总分枝数、有效分枝数、单株产量等主要性状均表现出明显的优势,且5月10日播种的产量分别较6月10日和6月20日播种的产量显著提高了56.52%和88.48%;密度试验结果表明,随着种植密度的增加,该品种的有效分枝数和单株荚果数均表现出先升后降的趋势,在密度为18万-21万穴/hm^2时,其产量分别比12万、24万穴/hm^2时提高了13.58%-35.80%、50.33%-79.73%,表明18万-21万穴/hm^2为河南地区农大花103最适宜的种植密度。

In order to analyze the optimum sowing date and density of a new peanut cultivar Nongdahua103 in Henan province,the effect of sowing date and density on the major agronomic characters and the yield were dissected in this study. When the sowing date was from May 10 to May 30,the accumulation of chlorophyll content,the total branches number,effective branch number and yield per plant showed obvious advantages. Compared to those planted on Jun 10 and Jun 20,the yield planted on May 10 was significantly increased by 56. 52% and 88. 48%,respectively. The effective branch number and the number of pods per plant increased first and then decreased with the increase of sowing density. Compared to the sowing density of 12 × 10^4 and 24 × 10^4 holes / ha,the yield increased by 13. 58% —35. 80% and50. 33% —79. 73%,respectively,under the sowing density of 18 × 10^4—21 × 10^4 holes / ha,which was the optimum sowing density for Nongdahua 103 in Henan province.