摘要
利用三元二次通用旋转组合设计,经计算机软件分析,建立了氮、磷、钾与砂培加工番茄苗期生育及生长量的数学模型。结果表明:氮对生长量及叶面积指数的影响最大。在适宜范围内,随着施氮量的增加,生长量明显增加,叶面积指数、坐果率也增加。施氮过量则生长量减少。磷、钾肥对促进加工番茄生长具有间接作用,利于提高加工番茄生长量。但过量施用磷、钾肥也对生长不利。
By means of quadratic rotational combination design and then analying with computer fware sot, the mathematical models of a three-factor （Nitrogen, Phosphorus, Potassium） and meanwhile its effects on growth and reproductive of processing tomato seedling was established in .sand culture. The results showed that nitrogen had a biggest effect on grownth and leaf area index of processing tomato. Appropriately, with the increase in the amount of nitrogen, a marked increase in the rate of growth, leaf area index,and also the setting. However,when the amount of nitrongen excede the standard number, the reproduction become less. Phosphorus and potassium had an indirect effect in promoting the growth of processing tomatoes,and conducive to improving the processing tomato growth. However, excessive use of phosphorus and potassium also had a negative effect.
出处
《北方园艺》
CAS
北大核心
2009年第7期4-6,共3页
Northern Horticulture
关键词
加工番茄
氮磷钾
数学模型
Processing tomato
Nitrogen,Phosphorus, Potassium
Mathematical model
