摘要
为探究聚磷酸铵水溶肥对番茄的农学效应,该文采用田间小区试验,研究了聚磷酸铵水溶肥对秋冬茬设施番茄产量、品质、磷素吸收的影响。结果表明,当施磷(化肥磷P2O5)量为29 kg/hm2时,番茄单果重和产量均达到最高;番茄品质的各个指标均表现出随施磷量的增加先增加后降低的趋势,得到适宜施磷量为29 kg/hm2;不同施磷量处理之间番茄根的磷吸收量差异不显著;番茄叶、果实和全株的磷吸收量随施磷量的增加先增加后降低,呈二次多项式关系,经拟合,番茄果实和全株磷吸收量最高时对应的施磷量分别为21.17,25.79 kg/hm2。综合分析,该试验条件下秋冬季设施番茄产量为42.88 t/hm2时,聚磷酸铵水溶肥的适宜施磷量是29kg/hm2。
To clarify the suitable application rate of the soluble ammonium polyphosphate fertilizer for tomato,the phosphorous rates of soluble ammonium polyphosphate fertilizer on yield,quality,phosphorous uptake of autumnwinter tomato were studied in a plastic greenhouse. The results showed that the yield of tomato and the fruit weight were highest at the 29 kg/ha,however,when continue to increase the amount of phosphorus,the yield and fruit weight will be lower. The most appropriate phosphorus rate for tomato quality was 29 kg/ha. As the phosphorus uptake of tomato roots,the difference between treatments was not significant; After fitting,the most appropriate phosphorus rate for tomato fruit and whole-plant were 21. 17 kg/ha and 25. 79 kg/ha respectively. The phosphorous utilization efficiency( PUE) was higher than other treatments at 29 kg/ha. In summary,the most appropriate phosphorous rate for a higher autumn-winter tomato yield was 29 kg/ha under this soil fertility.
出处
《华北农学报》
CSCD
北大核心
2016年第S1期36-40,共5页
Acta Agriculturae Boreali-Sinica
基金
公益性农业科研专项(201303133-1-5)
河北省重点研发计划国际科技合作专项(16397004D)
河北省科技支撑计划(14227304D)
关键词
聚磷酸铵
水溶肥
设施番茄
产量和品质
磷素吸收
Ammonium polyphosphate
Soluble fertilizer
Facilities tomatoes
Yield and quality
Phosphorous uptake
