连作土壤不同施肥水平对菠萝产量和品质的影响

Effects of different fertilizer application rates on yield and quality of pineapple under continuous cropping condition

针对菠萝生产中存在的连作障碍问题,开展在连作条件下不同施肥量对菠萝产量和品质的影响试验.结果表明：随着施肥量的增加,菠萝果实纵径、果实横径、冠芽高、冠芽鲜重、果眼数、单果重和产量呈增加趋势.FP80％～FP120％,随着施肥量增加可溶性总糖和可滴定酸含量呈增加趋势;Vc和可溶性总糖含量均表现为空白对照高于施肥处理.施肥对产量的贡献率表现为FP 150％＞FP120％＞FP 100％＞FP80％,肥料农学效率则表现为FP120％＞FP100％＞FP150％＞FP80％.因此,综合考虑施肥量对菠萝生长、产量品质的影响及肥料农学效率,在连作条件下建议适当提高肥料的投入量,即采用FP120％施肥处理.

With the status of continuous cropping obstacles in pineapple production, this research studied the effects of different fertilizer application rates on yield and quality of pineapple. The results showed that fruit length, fruit diameter, crown height, crown fresh weight, fruit weight and yield increased with the increase of fertilizer. The titratable acidity and total soluble sugar contents increased when the fertilizer rate was from FP80% to FP120%. However, Vitamin C and total soluble sugar contents of CK treatment were higher than those of other treatments. The fertilizer contribution rate（FCR） was in order： FP150%〉FP120%〉FPIO0%〉FP80%, and the agronomic efficiency（AE） was FP120%〉FP100%〉FP150%〉FP80%. Considering the fertilizer agronomic efficiency and the effects of different fertilizer application rates on pineapple growth, farmers should add 20% of fertilizer on the base of traditional fertilization.