我国设施番茄氮肥施用量现状及其利用率、产量影响和地力贡献率分析评价

我国设施番茄氮肥施用量现状及其利用率、产量影响和地

力贡献率分析评价

梁静;王丽英;陈清;张卫峰

【期刊名称】《中国蔬菜》 【年(卷),期】2015(000)010

【摘要】This paper evaluates present nitrogen input amount,nitrogen use efficiency and soil fertility contribution rate of greenhouse tomato,by analyzing 79 field experiments data from 57 domestic published papers. The results showed that under conventional application model,the total nitrogen input was 1 313 kg·hm-2, including nitrogen 617 kg·hm-2 from manure and 705 kg·hm-2 from chemical fertilizer. Under optimized application model the nitrogen from manure,chemical fertilizer and the total nitrogen input were 581.7 kg·hm-2, 353 kg·hm-2 and 936 kg·hm-2,respectively. The tomato yield under optimized application model was 8% higher than that of the conventional

application

model.Under

conventional

application

model,the average values of partial factor productivity (PFP),agronomic efficiency (AE) and recovery efficiency (RE) were 155.7 kg·kg-1,28.0 kg·kg-1 and 9.5%,respectively. Under the optimized application model,the average values of PFP,AE,RE were 356.3 kg·kg-1,63.6 kg·kg-1 and 17.8%,respectively. The average soil fertility contribution of conventional application and optimized application were 72.9% and