不同氮钾肥水平对温室番茄生长发育和产量的影响

研究了不同的氮钾肥处理下日光温室番茄生长发育和产量的变化情况。结果表明:处理间同时期株高和出叶数差异不显著,出叶数和生长时间相关性极强。番茄叶片叶绿素含量生长中期达到最高水平,各处理间变化趋势一致。各处理下部叶片氮元素含量差异显著,不同叶位叶片氮钾元素含量随着叶片节位数的增加而增加。叶和茎的干物质分配系数与施肥量呈同向变化,果实则相反。高肥和低肥均不利于单株生物产量、干物质积累总量和经济产量的增加,高肥的抑制作用更明显。综合各指标,番茄单株施N9.50g,K2O13.68g产量最高,生长最好。

Effects of Different N&K Levels on the Growth and Yield of Tomato in the Greenhouse

The experiment was carried out to study the effects of different N and K fertilization levels on growth,development and yield of tomatoes in the greenhouse.The results were as follows:the different fertilization levels have some effects on the plant height and the amount of leaves in the same period,but the differences are not evident.The amount of leaves is relevant to growth time,can be modeled by logistic equation.The changing tendency of content of chlorophyll in leaves of every treatment is correspondi...