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为了探明山西幼龄果园间作花生单粒精播的最适密度,以晋花7号花生为试验材料,在幼龄果园间作条件下,研究了不同单粒精播密度与双粒穴播对花生农艺性状、干物质积累动态及产量的影响。结果表明,花生主茎高和侧枝长随精播密度增加而逐渐增加,单株分枝数、单株结果数、双仁果率和饱果率均随密度增加而减少。当单粒精播密度为18.0和21.0万穴/hm2时,干物质积累量与积累速率均高于对照(双粒穴播处理)。由2014年试验数据结合产量趋势方程得出,单粒精播最适密度为19.18万穴/hm2,与对照双粒穴播相比,可节种20.8%,增产7.39%。
In order to find out the optimum density of single-sowing sowing peanut sowing in young orchard in Shanxi, Jinhua 7 peanut was used as test material to study the effects of sowing sowing density and sowing density Agronomic traits, dynamics of dry matter accumulation and yield. The results showed that the main stem height and lateral branch length of peanut increased with the increase of sowing density. The number of branches, the number of fruit per plant, the rate of double kernel fruit and the full fruit rate decreased with the increase of density. The dry matter accumulation and accumulation rate were both higher than that of the control (twin-grain sowing) when the single-sowing densities were 18.0 and 21.0 sow / hm2. According to the experimental data of 2014 and the yield trend equation, the optimum density of single sowing was 191,800 nits / hm2, which was 20.8% and 7.39% higher than that of the control sowing.