茄子需肥特性与施肥技术的研究

STUDY ON THE CHARACTERISTICS OF FERTILIZERS REQUIRED BY EGGPLANTS AND THE TECHNIQUES OF APPLYING FERTILIZERS

本文用正态累积函数方法,定量描述茄子全生育期的干物质积累与养分吸收的过程,结果表明,该过程为S形曲线,曲线分为始期、盛期、末期8个阶段。根据茄子的需肥特性建立的施用化肥模式为,定植期、门茄开花期、对茄生长期、四门斗茄生长期。这种4段式施肥效果良好,可以取代传统的3段和2段式。

Experiments were carried out on the dry matter accumulating and food absorbing process in the whole growth and development period of eggplants. The results showed that the process was of S-form curve which could be divided into three stages. According to the characteristics of fertilizers required by eggplants a four-stage fertilizer applying model was established. It can replace the traditional two-stage and three-stage fertilizer applying models.