盆栽茄子干物质积累与养分吸收规律的研究

本文介绍了用盆栽方法研究茄子干物质积累与养分吸收的规律。结果表明:茄子全生育期干物质积累与养分吸收均按 Logistic 函数变化,随着施肥量增加,曲线陡度加大,拐点后移。干物质迅速积累与养分旺盛吸收的时间出现在株龄76～144天左右。单株生产1515g 果实需要吸收纯氮6.84 g,纯磷1.97 g,纯钾5.03g,其氮、磷、钾比为1.36:0.39:1.00。单株生产量最高条件下全生育期叶片的最佳营养指标为氮3.87～5.77%,磷0.85～0.11%,钾2.24～3.89%。

A STUDY ON THE RELATIONSHIP BETWEEN YIELD FORMATION AND NUTRITION ABSORPTION IN EGGPLANT

A study on the relationship between yield formation and nutrition absorp-tion in eggplant was carried out by means of the pot experiment.The resultshowed that the dry-matter accumulation and nutrition absorption of eggplantin the whole growth period agreed with the logistic function,the curve gradi-ent became larger with the rise of fertiliser quantity and the centre pointmoved back.The peak of dry-matter accumulation and nutrition appeared inthe 76-144 day more and less.It is necessary to absorb 6.839g of nitrogen,1.967g of phosphorus and 5.034g of potassium for producing fruit of 1.515gper plant,of which the ratio of nitrogen,phosphorus and potassium is 1.36:0.39:1.00 When the production quantity per plant reached the highest point,the best nutrition index of blades in the whole growth period was nitrogen(3.87-5.77%),phosphorus(0.85-0.11%)and potassium(2.24-3.89%).