Determining the Appropriate Drip Irrigation Lower Limit and Nitrogen Fertilizer, Potassium Based on the Growth, Yield and Quality of Tomato in Greenhouse to Fertilizer Application
In order to find a reasonable combination of fertilization and fertilization for the high yield and high quality of tomatoes,the effectsof different irrigation limits,nitrogen application rates and potassium application rates on tomato growth,yield and quality are studied by the orthogonal test and model prediction under the condition of water and fertilizer integration.The results show that increasing the lower limit of irrigation can increase stem diameter and leaf areas.A large amount of nitrogen fertilizer is not conducive to the increase in stem diameters,but it can promote the increase in tomato leaf area.Potassium fertilizer application has no significant effect on the stem and leaf area of tomatoes.Increasing irrigation appropriately and reducing the amount of nitrogen fertilizer applied are beneficial to the growth of plants in the vegetative growth stage.The lower limit of irrigation,the amount of nitrogen applied and the amount of potassium applied has a significant effect on the tomato yield.With the increase in irrigation and amount of fertilizer,yields increase first and then decrease.W2N2K2 combination of water and fertilizer can get the best quality analyzed by the score.It is found that when the lower limit of irrigation is 76％,the upper limit is 100％,the amount of nitrogen applied is 358.5 kg/hm2 and the amount of potassium is 607.5 kg/hm2,there will be the highest yield,good quality,good crop growth.The predicted yield is 108.82 t/hm2.
NETL
NSTL
万方数据
维普
