甜菜平衡施肥技术研究

Study on techniques of balance fertilization in Sugarbeet

本试验运用一次回归正交设计法,对氮、磷、钾、锌4种肥料与糖用甜菜块根产量、含糖率及产糖量的关系进行了综合分析。结果表明:1)4种肥料对甜菜块根产量均有极显著的增产作用。对块根产量贡献依次为N>K2O>P2O5>Zn;2)对含糖率的作用大小不同。其中,增施钾肥有助于提高含糖率,氮肥与磷肥对含糖率呈负效应,锌肥效果不明显。对含糖率贡献依次为K2O>Zn>P2O5>N;3)对产糖量的作用主要表现在钾肥与锌肥有极显著的正效应,氮肥与磷肥作用不明显。对产糖量贡献依次为K2O>Zn>P2O5>N。因此,综合评价平衡施肥技术为每公顷施纯N240.00kg、P2O5240.00kg、K2O168.75kg、Zn33.75kg,对增加甜菜块根产量、提高含糖率及产糖量效果较优。

We have got the results which by the means of Once Regression Orthogonal Design approaching on the relationship between N,P,K,Zn fertilizer needed and their effect to the root yield,sugar content ,sugar yield of sugarbeet.Results have been shown thah:1.there has significant positive correlation between N,P,K,Zn fertilizer and root yield,their effect of contribute to root yield are N>K 2 O>P 2 O 5 >Zn;2.There have difference on N,P,K,Zn fertilizer contribute to sugar content,the sugar content was increased with K fertilizer needed and there has negative correlation between N,P fertilizer and sugar content,their effect of contribute to sugar content are K 2 O>Zn>P 2 O 5 >N;3.There has significant positive correlation between K,Zn fertilizer and sugar yield,but N,P fertilizer has small effects,their effect of contribute to sugar field are K 2 O>Zn>P 2 O 5 >N.Moreover,it has marked increased on sugarbeet root yield,sugar content and sugar yield that fertilized N240.0kg/ha,P 2 O 5 240kg/ha,K 2 O168.75kg/ha and Zn33.75kg /ha.