Effects Of Spraying Fertilizer At The Full-Blossom Period Of Female Flowers On Nut Yield And Quality Of Juglans Regia‘Wen185'

Juglans regia 'Wen185' is the main cultivar in walnut major producing area of South Xinjiang Basin, However, due to the combined effects of many factors and the per unit area yield was not high, nuts quality uneven had become a problem urgently to be solved in the quality and efficiency of the walnut industry. Based on exoroot fertilization was an important measure to increase yield and improve the fruit quality in fruit tree cultivation and management. Therefore, J.regia 'Wen185' walnuted was taken as the research object. With the spraying fertilizer effect field experiment and indoor analytical chemistry, based on the effects of spraying compound fertilizer by N(urea), B(boric acid), and S(sugar) at the full-blossom period of female flowers on fruit setting rate, nuts yield and quality. Based on its effect relationship, spraying concentration parameter of N, B, and S was collated and stipulated through synthetic decision, were tested to provide a scientific basis for spraying fertilizers management of J.regia 'Wen185'. The results showed that:The effect relationship of fruit setting rate(q, %) in N, B and S spraying fertilizer was log?0070.00464.00307.06915.1?-???BNBNq10at the full-blossom period of female flowers. If the spraying concentration of N(46% of nitrogen) was less than 5.8734 g/L and/or the spraying concentration of B(17.49% of boron) was less than 3.8861 g/L, the spraying concentration had positive effect on the fruit setting rate.The effect relationship of nuts yield per plant(G, kg) in N, B and S spraying fertilizer was 0105.00599.00390.09771.0?-???BNBNG?log10at the full-blossom period of female flowers.If the spraying concentration of N was less than 5.7047 g/L and/or the spraying concentration of B was less than 3.7143 g/L, the spraying concentration had positive effect on nuts yield.The nuts quality effect relationships in N, B and S spraying fertilizer were explained in the following subsection at the full-blossom period of female flowers: Nuts crude protein content(C, %): 0078.00462.00290.00281.1?-???BNBNC?log10. If the spraying concentration of N was less than 5.9231 g/L and/or the spraying concentration of B was less than 3.7179 g/L, the spraying concentration had positive effect on nuts crude protein content. Nuts crude fat content(E, %): log?0104.00255.00178.05790.1?-???BNBNE10. If the spraying concentration of N was less than 5.8077 g/L and/or the spraying concentration of B was less than 3.8365 g/L, the spraying concentration had positive effect on nuts crude fat content. Nuts Kernel rate(Y, %):0048.00255.00178.07325.1?-???BNBNY?log10. If the spraying concentration of N was less than5.3125 g/L and/or the spraying concentration of B was less than 3.7083 g/L,the spraying concentration had positive effect on nuts Kernel rate.Nuts single fruit weight(W, g):0110.00609.00409.07531.0?-???BNBNW?log10. If the spraying concentration of N was less than5.5364 g/L and/or the spraying concentration of B was less than 3.7182 g/L, the spraying concentration had positive effect on nuts single fruit weight.The spraying fertilizer concentration parameter in N, B and S spraying fertilizing were explained in the following subsection. N was 5.7118 g/L. B was 3.7653 g/L. And S was 5 g/L.With 5m×6m planting density, materialized cost 9.64 RMB/667 m2.