| According to the problems of drought and poor rain,gravel-mulched field aging,yield and quality of melon decline in Ningxia,this paper use the method of the comparative test and orthogonal test and introducing drought-resistant economic crops Cerasus humilis to do water-fertilizer coupling experiment of different varieties of Cerasus humilis’ growth laws and the suitable condition of different varieties of Cerasus humilis in gravel-mulched field in Tazhaike village,Xingren town of Zhongwei in Ningxia.The main redults as followed:1.By using plot comparison experiment method,plant height,stem diameter,yield,qualities and WUE of Cerasus humilis were comparatively analyzed.The result shows that,each physiological index of Nongda S-D’ is better than others in gravel-mulched field during the growth process.2.In the water and fertilizer coupling experiment,using three-factor two-level orthogonal test,studied that under the condition of old-gravel-mulched-field,varieties of Cerasus humilis,irrigation quota,fertilizer amount influents on growth and development of Cerasus humilis.Through the variance analysis and range analysis,promoting effect of the plant height of Cerasus humilis of 3 factors in order as:varieties of Cerasus humilis>amount of fertilizer application>irrigation quota,promoting effect of the stem diameter of Cerasus humilis of 3 factors in order as:varieties of Cerasus humilis>irrigation quota>amount of fertilizer application,A2B2C1 is the optimal schedule:Nongda 5,irrigation quota 3 m3/667m2,amount of fertilizer application 20 kg/667m2.Promoting effect of the nutrient in the soil of Cerasus humilis of 3 factors in order as:varieties of Cerasus humilis>amount of fertilizer application>irrigation quota,A2B2C1 is the optimal schedule:Nongda 5,irrigation quota 3 m3/667m2,amount of fertilizer application 20 kg/667m2.Promoting effect of the yeild of Cerasus humilis of 3 factors in order as:varieties of Cerasus humilis>irrigation quota>amount of fertilizer application,A2B2C1 is the optimal schedule:Nongda 5,irrigation quota 3 m3/667m2,amount of fertilizer application 20 kg/667m2.Promoting effect of the qualities of Cerasus humilis of 3 factors in order as:varieties of Cerasus humilis>irrigation quota>amount of fertilizer application,A2B2C1 is the optimal schedule:Nongda 5,irrigation quota 3 m3/667m2,amount of fertilizer application 20 kg/667m2.Promoting effect of the photosynthesis of leaves of Cerasus humilis of 3 factors in order as:varieties of irrigation quota>Cerasus humilis>amount of fertilizer application,A2B2C1 is the optimal schedule:Nongda 5,irrigation quota 3 m3/667m2,amount of fertilizer application 20 kg/667m2.Considering of high yield,qualities and water-saving,A2B2C1 is the optimal schedule in the gravel-mulched field:Nongda 5,irrigation quota 3 m3/667m2,amount of fertilizer application 20 kg/667m2. |
