Comprehensive evaluation of water and fertilizer for Lycium barbarum in central dry zone of Ningxia based on game theory combined weighting TOPSIS method
In order to find the optimal water and fertilizer combination for Lycium barbarum in the cen-tral dry zone of Ningxia,a total of nine treatments with two factors and three levels of irrigation and fer-tilization were used to analyze the effects of different water and fertilizer interactions on the growth,yield and fruit quality of Lycium barbarum.AHP hierarchical analysis and entropy weighting method were introduced to assign weights to 10 indicators of three categories of factors,and the final weights of each single indicator were obtained by using game theory combined weighting method.The results show that high water has a significant effect on the growth,yield,and quality of Lycium barbarum(P＜0.05),the optimal treatments for each growth indicator are seen in the high water treatment while me-dium and high fertilizers have a greater effect on the quality and yield.The highest weight is assigned to the dry weight(0.226 7)and the second highest to the total sugar(0.135 2).The best irrigation and fertilizer application interval is obtained from the model of strawberry integrated growth response to water and fertilizer coupling,and the optimal irrigation and fertilizer application ranges are 75％-110％ET0 for irrigation and 165.0-60.0-105.0 kg/hm2-223.5-79.5-144.0 kg/hm2 for fertilizer(N-P2O5-K2O),which is the most favorable to achieve high yield and high quality of Lycium barbarum.In this region,using the regression model Y=-0.090 4+0.370 6X1+0.000 2X22-0.010 4X1X2(combined score Y,irrigation volume X1,fertilizer application X2)to determine the optimal water and fertilizer combinations is conducive to the realization of high-quality and efficient production of Lycium barbarum.
Lycium barbarumwater and fertilizer interactiongame theory combined weightingTOPSIScomprehensive evaluation
万方数据
维普
