摘要
以中华寿桃为试材,研究了果实迅速膨大期不同施肥量对果实产量品质及土壤无机氮的影响。试验结果表明,适量追施氮磷钾(16∶8∶20)复合肥0.75、1.5 kg/株能够提高果实产量,在此基础上再增加肥料用量,增产效果不明显。果实品质与施肥量在一定范围内(0～1.5 kg/株)呈正相关,超过此范围会对果实品质产生负面影响。研究结果还表明,0～40 cm土壤无机氮含量随施肥量的增加而增加,硝态氮含量为40～83 mg/kg或铵态氮含量12～20 mg/kg范围内能保证果园产量。适量追肥能促进氮磷钾的吸收,提高叶绿素含量。
A field experiment was carried out to study the effects of different fertilizing amount at fruit expanding stage on fruit yield, quality and soil inorganic nitrogen. The yield was increased after topdressing appropriate （0. 75, 1.5 kg per plant） compound fertilizer of nitrogen, phosphorus and potassium at the rate of 16： 8： 20, and increasing the fertilizer amount based on this had little effect on the increasing of yield. The correlation between quality and fertilizing amount was positive as the fertilizer rate between 0 and 1.5 kg per plant, and was negative as out of the range. The content of inorganic nitrogen accumulated in 0 -40 cm soil layers increased with the increasing of fertilizer amount. The nitrate nitrogen at 40 - 83 mg/kg or ammonium nitrogen at 12 - 20 mg/kg in soil could meet the need of peach to obtain high fruit yield. Rational fertilizer could increase the absorption of nitrogen, phosphorus and potassium and the content of chlorophyll.
出处
《山东农业科学》
2011年第9期61-64,共4页
Shandong Agricultural Sciences
关键词
果实迅速膨大期
施肥量
产量
品质
Fruit expanding stage
Fertilizer amount
Yield
Quality
作者简介
王兆燕，女，硕士研究生，研究方向果树生理。E-mail：wangzhaoyan02@163．com
通讯作者，E-mail：pfl@sdau．edu．cn
