Study on Suitable Single -Seed Precision Sowing Density of Summer -Sowing Peanut after Winter Wheat Harvest
Yang Zhongxu
Li Qiuzhi
Yin Huihui
Shang Na
Li Haitao
Li Tong
Wang Shihong
Zhang Han
Abstract：To make clear the optimum single -seed precision sowing density of summer -sowing peanut after winter wheat harvest,the split -spot design was adopted with two kinds of planting patterns of ridge cul-ture (LZ)and flat culture (PZ)as the main treatment and 5 single -seed precision sowing densities (195 ~255 thousand holes per hectare)as the vice -treatment.The control adopted the double -seed sowing pattern with the density of 150 thousand holes per hectare.The plastic film mulching and double -row planting pat-tern were used in ridge and flat culture.The results showed that the main stem height and lateral branch length of peanuts under ridge culture were 2.3 cm and 1.1 cm higher than those under flat cultivation,and they all increased along with the increase of sowing density,but there were no significant differences between different sowing densities.The total branch number and effective branch number reduced along with the increase of so-wing density,and those under ridge culture were 0.7 and 0.6 more than those under flat cultivation.Com-pared with flat cultivation,the pods per plant under ridge culture was 1.1 more and the pods per kilogram was 52.1 less.The pods per plant under two planting patterns decreased with the increase of sowing density and the pods per kilogram had the opposite change trend.The 100 -kernel weight and shelling percentage under ridge culture was 31.3 gram and 4.4 percentage points more than those under flat cultivation.And they all de-clined with the increase of sowing density.The pod yield under two planting modes had very significant differ-ences,and that under ridge culture was 5 929.1 kg/hm2 ,which increased by 19.54% compared with that under flat cultivation.For the same planting pattern,the pod yield between different sowing densities also had significant or very significant differences.The former two density treatments who had the highest pod yield un-der two planting patterns were both T2 and T3 treatment,and their pod yields were very significantly higher than that of control.In conclusion,the optimum planting pattern of summer -sowing peanut after winter wheat harvest was ridge culture with film mulching,and the most appropriate sowing density ranged from 210 thou-sand to 225 thousand holes per hectare.
Keywords：PeanutSummer -sowingSingle -seed precision sowingDensityRidge cultureFlat cul-tureFilm mulching
Publication Date：2016-07-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 44-47 )