Improved Greenhouse Cucumber Production Under Deficit Water And Fertilization In Northern China

The objective of this study was to investigate the effects of different water and fertilizer applications on biomass, yield and fruit physical quality of greenhouse cucumber under drip irrigation. The experiment was conducted at Water Conservancy Research Institute, Shenbei District, Shenyang, Northern China during February-July, 2016. Nine treatments were used in randomized block design consisted of three levels of water field capacity (FC) and urea-potash (N-K) fertilizer combinations: W-1 (65% of FC), W-2 (75% of FC), W-3 (85% of FC) and N-1-K-1 (285-305 kg/hm(2)), N-2-K-2 (420-435 kg/hm(2)), N-3-K-3 (530-565 kg/hm(2)). Local farmers' conventional application of water (100%) and fertilizer (NPK) was considered as check (CK) for comparison. Data obtained was analyzed (ANOVA) to check the significant effect of treatments. The results revealed that, treatment W3N2K1 obtained highest cucumber yield of 129.99 t/hm(2), while W1N1K1 recorded the lowest yield (113.29 t/hm(2)), in which total amount of seasonal water applied ranges from 85.3 mm to 172.36 mm. The highest yield was obtained 0.5% greater than the CK yield (129.35 t/hm(2)). The water and fertilizer application was significantly (p<0.001) influenced on cucumber yield. Moreover, the influence of water application was significantly (0.01更多