施肥模式和种植密度对花生产量的影响

Effects of Different Fertilization Modes and Planting Density on Yield of Peanut

为筛选花生双粒穴播适宜的施肥模式和种植密度,以花生品种航花2号为试验材料进行田间试验,设置3种施肥模式和3个种植密度,采用随机区组设计,研究不同施肥模式和种植密度对花生荚果产量的影响。结果显示,与常规施肥处理相比,减量施肥有增加花生荚果产量的趋势;增加施肥量会降低花生荚果产量,但当花生种植密度增加到一定程度时,增加施肥量会显著提高花生荚果产量;与常规种植密度相比,降低种植密度对花生产量无显著影响;提高种植密度会随着施肥量的增加,花生荚果产量逐渐增加,当施肥量在A3(纯氮N 135 kg/hm^(2)、P_(2)O_(5)180 kg/hm^(2)、K_(2)O 240 kg/hm^(2))条件下,提高种植密度会显著增加花生荚果产量。在该试验条件下,双粒穴播适宜的施肥模式为纯氮N 120 kg/hm^(2)、P_(2)O_(5)157.5 kg/hm^(2)、K_(2)O 210 kg/hm^(2),种植密度为31.5万株/hm^(2)。

To screen the suitable fertilization mode and planting density of peanut double seed hole sowing,peanut variety Hanghua 2 was used as the experimental material for field experiment.Three fertilization modes and three planting densities were set up so as to study the effects of fertilization and planting density on peanut pod yield.The results showed that compared with conventional fertilization treatment,reduced fertilization had the trend of increasing peanut pod yield.Increasing the amount of fertilizer could reduce the pod yield of peanut,but when the planting density of peanut increased to a certain extent,enhancement of fertilizer amount would significantly increase the pod yield of peanut.Compared with conventional planting density,reducing planting density had no significant effects on flower production.Increasing the planting density gradually enhanced the peanut pod yield with the increase of the amount of fertilizer.When the amount of fertilizer was A3(pure nitrogen N 135 kg/hm^(2),P_(2)O_(5) 180 kg/hm^(2),K_(2)O 240 kg/hm^(2)),increasing the planting density significantly increased the peanut pod yield.Under the experimental conditions,the suitable fertilization modes for double seed hole sowing were pure nitrogen 120 kg/hm^(2),P_(2)O_(5) 157.5 kg/hm^(2),K_(2)O 210 kg/hm^(2),and the planting density was 315000 plants/hm^(2).