精准施肥对小白菜产量、品质及土壤特性的影响

Effect of Precision Fertilizeation on Pakchoi Yield, Quality and Soil Characteristics

按照蔬菜精准施肥推荐系统小白菜的推荐施肥量,在田间进行了验证试验。结果表明:推荐施肥量处理的小白菜产量最高,达36868.5kg.hm-2,小白菜硝酸盐含量较低,肥料利用率在所有施肥处理中最高,种植者纯收益最大,达54271.65元.hm-2,并且种植后土壤养分变化以及酸碱度、电导度、有机质含量等多个指标的变化趋势都优于其他处理,不会造成土壤中盐分累积,因此说明该系统用于推荐露地小白菜生产的施肥量是准确和可靠的。

Influence of the fertilizer recommending amount generated from Precision Fertilizer Recommendation System of Vegetable （PFRSV） on pakchoi and soil characteristic was studied. The results showed that the treatment with recommending amount of fertilizer had the highest pakchoi yield of 36868.5 kg·hm^-2, the highest net income of 54271.65 RMB·hm^-2 increased the fertilizer utilization rate, decreased the nitrate content of pakchoi, and also balanced the-change of nutrient pH, EC, organic matter content of soil after planting pakchoi. It couldn＇t build up salt accumulation. Therefore the system is precise and reliable for using in recommendation fertilizer regime on production of pakchoi.