Abstract: By studying the effects of coupling irrigation amount and fertilizer amount on cucumber growth index, fruit yield and quality, the integrated management system of water and fertilizer in greenhouse cucumber in dry farming area of Ningxia is explored. Two factors and three levels orthogonal test of irrigation amount and fertilizer amount were set with spring and summer stubble cucumber as test material. The results show that the cucumber height shows an available logistic equation simulation during whole growth period, and almost all simulation coefficients reaches as high as more than 98%, plant height show TR7 (high water and fertilizer)﹥TR8(medium water and high fertilizer)﹥TR4(high water fertilizer), and this three treatments are significantly higher than those of other treatments; From the peak of fruit stage to the end of fruit stage, the stem diameter almost stopps growing. At the same time, high fertilizer level can promote growth of leaf, the amount of water and fertilizer is positively correlated with plant yield, the correlation coefficient is up to 0.47~0.57, and the amount of water and fertilizer is positively correlated with yield. Under the condition of sandy loam (bulk density is 1.10 g/cm³, field water capacity is 24.21%), the best treatment is 2 222.05 m³/hm² of irrigation water and 1 200 kg/hm² of fertilizer. The yield is up to 110 190.00 kg/hm², the economic benefit is up to 192 700 yuan/hm², the water productivity is 49.58 kg/m³, and the fertilizer productivity is 91.83 kg/kg. Among them, N amount is 216 kg/hm², P₂O₅ amount is 108 kg/hm², and K₂O amount is 324 kg/hm².

Key words: solar greenhouse, spring-summer stubble, cucumber, irrigation system