豫南旱地花生开花及干物质积累规律研究

通过对豫南旱地花生开花及干物质积累规律的研究,结果表明:豫南地区旱地花生苗期短,有效花期短,前期生长发育快,产量形成分配系数高。旱地花生出苗后25 d左右始花,花期45 d左右,花后20d进入盛花期,单株平均开花量为120.1朵,初花期结果数占总果数的26.5%,盛花期结果数占总结果数的73.5%,末期开的花为无效花。干物质积累出现苗期和开花下针期增长慢、结荚期增产快,饱果成熟期又下降的趋势,干物质积累的高峰出现在苗后68 d,日增重量达0.92 g/株。

Studies on the Blossom and Dry Matter Accumulation Rules with Arid Land Planted Peanut in South Henan Area

Through the study on rules of the blossom and dry matter accumulation of arid land planted peanut in south Henan area,the result indicated: the seedling and effective flowering period was short,the early growth was fast and the yield distribution coefficient was high.Flower stage began at about 25d after plant emergence and lasted for about 45d.Peak flowering stage appeared 20d after the flowering stage began.The average flowering number per plant was 120.1.26.5% of the pod number resulted from the early flowering stage and the other 73.5% resulted from the peak flowering stage.The late flowering stage was invalid for the pod formation.The dry matter accumulation was slow at seedling,flowering and pegging stages and turned fast at pod setting stage,after then it turned slow again at pod filling stage.The dry matter accumulation peak appeared at 68d after the seedling emergence which the daily accumulation was 0.92 g/plant.