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Title:: Effects of Phosphorus Fertilization on Dry Matter and Phosphorus Absorption of Seed-calabash

Author(s):: DUAN Xiangkun; WANG Jianyu; WANG Zhipeng; (Institute of Agricultural Research 6th Branch of XPCG,Wujiaqu,Xinjiang 831300)

Abstract:: Seed-calabash ‘Ruifeng No.9’ was used as the test material,applying four rates of P fertilizer,0,112.5,225.0,337.5 kg·hm-2(P0,P1,P2,P3),respectively,the effects of P fertilization on dry matter accumulation(DMA),P uptake and accumulation(PUA) and synthesized economic yield of seed-calabash was investigated,in order to provide a theoretical basis for the amount of phosphate fertilizer in the field of seed-calabash.The results showed that P application increased dry matter accumulation,uptake and accumulation of seed-calabash for 225.0 kg·hm-2 treatment,increasing by 19.5%,23.0% compared with no P fertilizer treatment at fruiting stage.The increase in the amount of phosphorus could increase the yield,but the overdose of fertilization could decrease yield.The highest yield of processing 225.0 kg·hm-2 treatments was 2 079 kg·hm-2 respectively.Compared with no P fertilizer treatment,seed-calabash of 225.0 kg·hm-2 treatments increased by 27.5%.Based on synthesized economic yield and P fertilizer efficiency,the recommendation of P fertilizer for seeds with a gourd was 112.5-225.0 kg·hm-2 under the climatic condition of the experimental area.