Effects of Different Fertilization Models on Soil Characteristics and Fruit Characters of Ziziphus jujube cv. Lingwuchangzao

【Objective】 To select high quality and efficient fertilizer cultivation measures for Ziziphus jujube cv. Lingwuchangzao and improve the fruit quality and fruit yield. 【Methods】 The cross treatment of inter-row planting grass and tree disk cover were used. This paper studied the effects of different fertilization patterns on the soil characteristics and fruit characteristics of Lingwuchangzao plantation. Trifolium repens L. and Lolium perenne L. were selected as the grass species. The tree disk mulching treatment adopted three modes: covering horticultural ground cloth, covering straw and tree disk clearing and tillage. The garden clear tillage was taken as contrast, the effects of different fertilization patterns on soil characteristics and fruit characters of Lingwuchangzao Plantation were analyzed by measuring the fruit characters and yield of jujube plantation. 【Results】 The results showed that: (1) Compared with the "whole garden clear tillage" pattern, the inter-row planting pattern with Trifolium repens L. and tree disk mulch straw combination patterns could increase the vertical diameter of fruit, increase the hardness of fruit (2.22%) and its yield (38.01%). Inter-row planting pattern with Trifolium repens L. and mulch straw combination patterns could effectively improve the fruit setting rate (66.17%), soluble solids content (21.95%) and flavonoids content (29.79%); (2) Inter-row planting with Lolium perenne L. and tree disk mulch straw combination patterns could reduce soil bulk density and increase soil porosity. Inter-row planting pattern with Trifolium repens L. and tree disk covering gardening ground could increase available P content by 17.68 mg/kg in 0-20 cm soil layer, alkali hydrolyzed N content by 53.44 mg/kg and soil porosity by 0.09%. Inter-row planting pattern with Trifolium repens L. and mulch straw combination patterns could increase the content of alkali hydrolyzed nitrogen by 52.78 mg/kg and the content of total available phosphorus by 1.78 mg/kg. 【Conclusion】 The fruit quality of Lingwuchangzao can be improved by the combination of inter-row planting pattern with Trifolium repens L. and tree disk mulch straw combination patterns, inter-row planting pattern with Lolium perenne L. and tree disk covering gardening ground. It can be concluded that in the practical production the "Lolium perenne L. and tree disk mulch straw combination patterns" model can be adopted to reduce soil bulk density and increase soil overall porosity. The contents of available potassium, available P and alkali-hydrolyzed N in soil are increased by the "inter-row planting pattern with Trifolium repens L. and mulch straw combination pattern" model.