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采用不同氮水平和钾水平处理,研究了保护地黄瓜生育期内干物质积累规律、矿质养分吸收规律,以及不同施肥处理对黄瓜产量、品质及其环境的影响。结果表明,黄瓜生育期内干物质和矿质养分的积累为慢—快—慢过程,即定植—初瓜期为缓慢积累阶段,初瓜期—盛瓜期为快速积累阶段,高峰出现在盛瓜期,随后到拉秧期积累逐渐减弱。试验还表明,在试验条件下,与传统施肥处理相比,减少氮的用量,黄瓜产量会降低,但N2(900kg/hm2)处理与传统施肥(2100kg/hm2)处理之间差异不明显;减少钾的用量,黄瓜产量同样会降低,但K3(1000kg/hm2)处理与传统施肥(1250kg/hm2)处理之间差异不明显;N2处理和K3处理与传统施肥处理相比,均可提高果实中Vc含量和有效酸度(pH值)。
The effects of different fertilizer treatments on the yield, quality and environment of cucumber were studied under different nitrogen and potassium levels to study the law of dry matter accumulation, the law of mineral nutrient absorption during the growth period of cucumber. The results showed that the accumulation of dry matter and mineral nutrients during the growth period of cucumber was a slow-fast-slow process, that is, the stage of slow planting-initial melon accumulation was slow, the early melon-growing stage was rapid accumulation stage, Period, then gradually weakened in the poplar seedling accumulation. The experiment also showed that under the experimental conditions, compared with the traditional fertilization, reducing the amount of nitrogen, cucumber production will be reduced, but no significant difference between the treatment of N2 (900kg / hm2) and conventional fertilization (2100kg / hm2) However, there was no significant difference between K3 (1000kg / hm2) treatment and traditional fertilization (1250kg / hm2) treatment. Compared with the traditional fertilization treatments, N2 treatment and K3 treatment could increase the fruit yield Vc content and effective acidity (pH value).