- Author: WANG Guoying, ZHANG Yuxing, ZHANG Qihang
- Keywords: 'Xinli No.7' pear; Formulated fertilization; Balance fertilizer; Fruit quality; Tree nutritional status;
- DOI: 10.13925/j.cnki.gsxb.2018.S.15
- Received date:
- Accepted date:
- Online date:
PDF （） Abstract（）
Abstract：【Objective】At present, there are many problems in fertilizing in pear orchards, such as excessive application of chemical fertilizers, especially excessively applying nitrogen, even without organic fertilizer, resulting in nutritional elements imbalance.These problems lead to the decrease of fruit quality and economic benefits, which directly hinders the healthy development of pear industry.In order to solve this problem, the experiment of formulated fertilization was carried out, which aimed at selecting the appropriate fertilizer formulas and providing a scientific basis for reasonable fertilization.【Methods】Using'Xinli No.7'pear as materials, through soil fertilization, the effects of five organicinorganic formula fertilizer treatments (i.e.formula fertilizer, formula fertilizer + N, formula fertilizer +P, formula fertilizer + K, and formula fertilizer + K + B) were studied on fruit quality and tree nutritional status.【Results】 (1) In terms of the effects of formula fertilizer on fruit quality, the treatment of 1 kg formula fertilizer per tree increased the soluble solids content, the ratio of sugar to acid, and the individual yield. (2) In terms of the effects of formula fertilizer on tree nutritional status, the treatment of 0.75 kg formula fertilizer + 0.25 kg· plant-1 K2 SO4 per tree improved the branch length, girth increment and photosynthetic rate.【Conclusion】The effect of applying 1 kg balanced fertilizer per tree on improving yield and fruit quality was better.In addition, the effect of 0.75 kg balanced fertilizer +0.25 kg· plant-1 potassium sulfate per tree on promoting tree vegetative growth was reasonable.