| Xinjiang has unique light and heat resources,and is one of the few areas in the world that is particularly suitable for processing tomato cultivation.Processing tomato has become an important economic crop in Xinjiang,which has a high prospect of popularization and economic value.During the processing tomato planting,farmers had still been relying on experience to apply fertilizers.For pursuiting of large water and fertilizer,can not reasonably apply chemical fertilizer according to the characteristics of processing tomato,not only can not increase production,but also will bring many environmental problems,seriously affecting the sustainable development of processing tomato industry.In this study,pot experiments were used to determine the plant height,effective branch number,chlorophyll content,biomass,N,P,K nutrient absorption and accumulation,and the distribution ratio of different organs of Processing Tomato under different treatment conditions and different growth periods,and to explore the effects of Fertilization on the growth,nutrient absorption and nutrient distribution of processing tomato In order to provide theoretical support for the efficient utilization and sustainable development of processing tomato nutrients in Xinjiang.The main conclusions are as follows:(1)N fertilizer pot experiment showed that when the N fertilizer for 2 g/basin(450 kg/hm~2)and 3g/basin(675 kg/hm~2),processing tomato plant height,branch number,SPAD,biomass and n accumulation than N increased significantly,respectively increased 3.59%~20.4%,17%~24.65%and 18.83%~49.5%,3.24%~70.92%and 1.27%~211.2%,the processing of tomato growing well,nutrition absorption,branching number adjustment ability is stronger,N supply and photosynthesis were the best.Compared with the treatment without N fertilizer,the absorption of N was 11.04%~165.17%,P 13.38%~270.64%,and K 10.6%~125.64%,respectively.N application of 2 g/pot(450 kg/hm~2)and 3 g/pot(675 kg/hm~2)was the best for nutrient absorption and distribution of N,P and K in processing tomatoes.(2)P fertilizer pot experiment showed that when the P fertilizer was 1 g/pot(225 kg/hm~2),the plant height,flowering and fruiting stage of processing tomato were the best,which were 29.36%,24.89%and 20.4%higher than those of non application of P fertilizer,respectively;the SPAD,biomass and phosphorus accumulation of processing tomato were 2 g/pot(450 kg/hm~2)Compared with the treatment without P application,it was increased by 26.29%,120.12%and 103.14%respectively.When the amount of P fertilizer was 2 g/pot(450 kg/hm~2)and 1.5 g/pot(337.5 kg/hm~2),the N absorption of processing tomato was the highest at seedling and flowering stage,which was 10.75 times and 149.59%higher than that of no P application.When the amount of P fertilizer was 2 g/pot(450kg/hm~2),the effect of processing tomato on the absorption of P and the increase of P content in each organ was the most obvious,which was 60.8%~105.26%higher than that of non applying P.When the amount of P fertilizer used in processing tomato was 2.5g/pot(562.5kg/hm~2),2 g/pot(450kg/hm~2)in flowering stage and 0.5g/pot(112.5kg/hm~2)in fruit setting stage,the absorption of K and the content of K in all organs were significantly increased,78.19%,22.49%and 24.39%more than that without P application.(3)K fertilizer pot experiment showed that there was no significant difference in plant height and SPAD of Processing Tomato under the condition of no lack of N and P.When the amount of K fertilizer was 0.5g/pot(112.5kg/hm~2)and 1.5g/pot(337.5kg/hm~2),the number of effective branches in flowering and fruiting stage of processing tomato was significantly increased by 20.59%and 25.04%respectively.When the K application rate was 1 g/pot(225 kg/hm~2),the biomass at flowering stage was significantly increased by 37.83%compared with that without K application;when the K application rate was 0.5g/pot(112.5kg/hm~2),the biomass and K accumulation at fruit setting stage were significantly increased by30.75%and 69.33%respectively.K application had no significant effect on the absorption and promotion of N,but it inhibited the absorption of N and the increase of N content in all organs of processing tomato when excessive K fertilizer was applied.K application affected the absorption and distribution of P in the middle and later stages.When the amount of K fertilizer was 1g/pot(225kg/hm~2)and 2g/pot(450kg/hm~2),the absorption of P in the flowering and fruiting stages of processing tomato was increased,109%more than that of no K application 31%and 52.69%;when the amount of K fertilizer was 2 g/pot(450 kg/hm~2),the processing tomato absorbed 43.7%more K than that of the non K treatment in the fruit setting period,and the earlier application of K had no significant effect on the absorption and distribution of K,which was more significant in the fruit setting period. |
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