不同单粒播种密度对花生产量的影响

The Effect of Single-seed Precision Sowing on Peanut Yield under Different Planting Density

以花生小粒型品种阜花22号为试验材料,研究4种单粒密度(XS1:16. 0万穴/hm^2、XS2:19. 5万穴/hm^2、XS3:25. 0万穴/hm^2、XS4:33. 3万穴/hm^2、)与传统双粒穴播(XS-CK:16. 0万穴/hm^2)对花生茎叶干物质量积累、光合特性以及产量的影响。结果表明,在出苗后110 d时XS1至XS4叶重均高于对照,分别比对照XS-CK增加41. 4%、13. 4%、9. 6%、2. 3%;所有单粒播种处理下,净光合速率和蒸腾速率在出苗后60 d后,均显著高于对照,XS3的胞间CO_2浓度在各个时期均处于较低的水平;从产量结果来看,XS3产量最高,比对照增产12. 0%,增产效果显著,该试验条件下是阜花22号适宜的单粒播种密度。

Fuhua22(a small-grain type variety of peanut)was be used as a test material,the difference of dry matter weight,photosynthetic characteristics and yield between four single-seed sowing density(XS1:160000points/hm2,XS2:195000points/hm2,XS3:250000points/hm2,XS4:333000points/hm2)and double seed bunch planting(XS-CK:160000points/hm2)was researched in this study.110d after emergence,the leaf weight of XS1to XS4were all higher than the control,which were respectively41.4%,13.4%,9.6%,and2.3%higher than that of the control XS-CK;the net photosynthetic rate and transpiration rate of four single-seed precision sowing treatments were significantly higher than that of the control,the intercellular CO2concentration of XS3was at a low level in each period;the yield of XS3was the highest,which was12.0%higher than that of the control,The suitable single seed density of Fuhua22.