不同生育时期膜下滴灌对花生生长发育及产量的影响

Effect of Mulch Drip Irrigation at Different Growth Stages on Peanut Growth and Yield

以花生品种山花7号为材料,研究了不同生育时期膜下滴灌对花生生长发育、产量及产量构成因素的影响。结果表明,膜下滴灌促进花生植株生长,其主茎高、侧枝长、分枝数、单株叶面积、生物量均大于CK;显著增加花生生育后期叶片叶绿素a/b值;对百果重、百仁重、单株结果数、出米率、荚果和籽仁产量有明显的促进作用。花针期滴灌、花针期和结荚期滴灌两处理花生荚果和籽仁产量增产幅度均在7%以上,而结荚期滴灌荚果和籽仁产量增幅仅分别为3.61%和5.08%。膜下滴灌有利于促进花生的生长发育,提高花生产量,在花针期进行膜下滴灌补水,增产效果较为明显。

The Shanhua7 was chosen as trial material. The peanut growth, yield and yield component factors were studied under mulch drip irrigation at different growth stages. The results showed that the stem height, branch length, leaf area per plant and biomass under mulch drip irrigation were all higher than CK in the whole sampling period. Mulch drip irrigation promoted the growth of peanut plants, the stem height, branch length, leaf area per plant, biomass were greater than CK. During the late growth stage, mulch drip irrigation significantly increased the chlorophyll a/b; Mulch drip irrigation significantly increased the number of branches, peanut 100 pods weight, 100 kernels weight, pod number per plant, kernel rate, pod and kernel yield. Mulch drip irrigation at pegging stage, as well as at pegging stage and pod setting stage led the peanut pod and kernel yield increased more than 7%, while mulch drip irrigation at pegging stage led the pod and kernel yield increased only 3.61% and 5.08 %. Mulch drip irrigation was conducive to the promotion of peanut growth and increase of peanut yield, while production increase effect was more obvious when mulch drip irrigation at pegging stage.