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为研究异根嫁接黄瓜对适度水分亏缺的响应,以中农26号黄瓜(Cucumis sativas L.)为材料,以自根嫁接黄瓜适宜水分管理(每次20m3/667m2)为对照,研究异根嫁接黄瓜生长和养分吸收等指标对适度亏缺灌溉(每次12m3/667m2)的响应。结果表明:与自根嫁接黄瓜相比,适度亏缺灌溉下,异根嫁接黄瓜的生长势较强,每株黄瓜N、P和K养分的积累量分别提高了49.6%~53.3%、16.7%~29.0%和32.2%~40.5%;产量和总生物量也显著提高。这一结果表明,通过异根嫁接可以在减少灌水量的同时,维持地上部营养生长,促进养分吸收和干物质积累,从而实现良好的农艺节水效果。
In order to study the response of root-grafted cucumber to moderate water deficit, the root system of cucumber (Cucumis sativas L.) from Zhongnong 26 was used as the control material and the suitable water management (20m3 / 667m2 each time) Cucumber growth and nutrient uptake and other indicators of moderately deficient irrigation (each 12m3 / 667m2) response. The results showed that compared with self-rooted cucumber, the growth of heterosis rooted grafted cucumber was stronger under moderate irrigation, and the accumulation of N, P and K nutrients per cucumber increased by 49.6% -53.3% and 16.7% respectively, ~ 29.0% and 32.2% ~ 40.5% respectively. The yield and total biomass also increased significantly. This result shows that the different root grafting can reduce the amount of irrigation while maintaining aboveground vegetative growth, promoting nutrient absorption and dry matter accumulation, so as to achieve good agronomic water saving effect.