水氮配合对温室番茄生长及土壤硝态氮的影响

Influences of Water and Nitrogen Coordination on Tomato Growth and Soil Nitrate Nitrogen in Greenhouse

采用田间试验和室内分析相结合的试验方法,研究了沟灌条件下不同水氮处理对温室番茄生长及土壤硝态氮的影响。结果表明,温室番茄以常规灌溉不施氮（FCN0）处理产量最高,达88.20t·hm^-2;节水灌溉（比常规灌溉节水1/3）不施氮（FRN0）处理对番茄的各项生长指标均有所促进,产量与FCN0处理差异不显著。在本试验条件下,温室番茄种植以节水灌溉不施氮处理（即单次灌水量为180-240m^3·hm^-2,在番茄苗期、初花期、盛果期和后期分别灌溉,不施氮肥）效果最佳。

Taking the method of combining field experiment with laboratory analysis, this paper studied the effects of different amount water and nitrogen treatment on tomato （ Solarium lycopersicum ） growth and soil nitrate nitrogen under furrow irrigation. The results indicated that the highest tomato yield in greenhouse was 88.20 t · hm^-2 under conventional irrigation without nitrogen （ FCN0 ）; the treatment with water-saving irrigation （ save 1/3 water than conventional irrigation ） and no nitrogen （ FRN0 ） could improve various growth indices of tomato, and the yield difference was not significant between FRNO and FCNO treatments. Therefore, under this experimental condition, the treatment of water-saving irrigation and no nitrogen （ i.e. irrigation amount at one time was 180-240 m^3· hm^-2, in the periods of seedling, initial flowering, full fruiting and late growing, separately ） had the best effect for tomato planting.