小粒花生安花3号单粒精播种植密度探究

Single-Seed Sowing Density of a Small-Seed Peanut Cultivar'Anhua 3'

为了探究安花3号单粒精播最适合的种植密度,通过5个密度的单粒精播和传统密度双粒穴播(CK)比较试验,结果表明:较低密度(≤27万粒/hm^(2))单粒精播的植株农艺性状与CK没有明显差异,随密度的增加,植株的主茎高和侧枝长随之增加,当密度为≥30万粒/hm^(2)时显著高于CK;单粒精播的单株饱果数和单株生产力高于CK,提高幅度随密度的增加而降低;单粒精播的百果重随密度的增加而降低,密度≥33万粒/hm^(2)时显著低于CK;单粒精播的产量随种植密度变化呈抛物线,密度为27~30万粒/hm^(2)时显著高于CK,当密度为30万粒/hm^(2)、株行距为10.0 cm×33.3 cm时,产量和净产值最高。安花3号在安阳地区单粒精播合适的种植密度为27~30万粒/hm^(2),株行距为10.0~11.1 cm×33.3 cm。

To explore the most suitable single-seed sowing density of the small-seed peanut cultivar'Anhua 3',a comparative experiment was conducted with single-seed sowing at five densities and conventional double-seed sowing(CK).The results showed that the agronomic traits of plants in the single-seed sowing groups were not significantly different from those in CK when the sowing density was≤270000 seeds/hm^(2).With the increase in sowing density,the main stem height and lateral branch length increased.When the density was≥300000 seeds/hm^(2),the main stem height and lateral branch length in the single-seed sowing groups were significantly higher than those in CK.The single-seed sowing groups had higher number of full pods per plant and higher productivity per plant than CK,and the improving degrees of single-seed sowing relative to CK decreased as the sowing density increased.The 100-pod weight decreased as the density increased,and it was significantly lower in single-seed sowing groups than in CK when the sowing density was≥330000 seeds/hm^(2).The peanut yield followed a parabolic curve as the sowing density increased.When the density was within the range of 270000-300000 seeds/hm^(2),single-seed sowing groups had significantly higher yields than CK.The yield and net output value were the highest when sowing was carried out with the density of 300000 seeds/hm^(2) and the plant and row spacing of 10.0 cm×33.3 cm.The suitable density and plant and row spacing for single-seed sowing of'Anhua 3'in Anyang was 270000-300000 seeds/hm^(2) and 10.0-11.1 cm×33.3 cm,respectively.