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三年田间试验表明,番茄对氮磷钾的吸收贯穿于整个生育期,植株内氮磷钾的积累量随生长发育而增长,直到试验结束。番茄一生需钾量最高,氮次之,磷较少;亩产7.5t果实需吸收氮(N)20.72—23.58kg,磷(P_2O_5)5.96-7.01kg,钾(K_2O)32.55—39.34kg;平均一株番茄需氮7.31—8.32g,磷2.10—2.47g,钾11.49—13.88g。氮磷钾在植株体内的分布,前期以叶中为最多,茎次之,果实中最少;到全部果穗果实收获结束时,则以果实中的氮磷钾含量最高,分别占总吸收量的64.29％—67.84％,62.72％—66.13％和71.66％—74.19％。氮磷配合施用,番茄植株吸收的氮、磷、钾总量分别比对照增加22.28％,24.50％和22.80％,产量提高15.35％,产品品质也较好。
Three years of field experiments showed that the absorption of nitrogen, phosphorus and potassium in tomato throughout the growth period, the accumulation of nitrogen, phosphorus and potassium plants grow with growth and growth until the end of the experiment. Tomato had the highest amount of potassium needed in the life, followed by nitrogen and less phosphorus; the yield of 7.5 tons of fruit required 20.72-23.58kg of nitrogen, 5.96-7.01kg of phosphorus and 32.55-39.34kg of potassium, A tomato needs nitrogen 7.31-8.32g, phosphorus 2.10-2.47g, potassium 11.49-13.88g. The distribution of N, P and K in plants was predominant in the leaves at the early stage, followed by the stems and the least in the fruits. At the end of the harvest of all the ear fruits, the contents of N, P, and K in the fruits were the highest, accounting for 64.29 % -67.84%, 62.72% -66.13% and 71.66% -74.19%. With the application of nitrogen and phosphorus, the total amount of nitrogen, phosphorus and potassium absorbed by tomato plants increased by 22.28%, 24.50% and 22.80% respectively, and the yield was increased by 15.35% and the quality of products was also better.