Effects of Application Rate of Bag-Controlled Release Fertilizer on Soil Available Nutrient Contents and Peach Growth and Fruiting
Qi Yuji
Peng Futian
Zhang Shoushi
Zhang Jianghong
Jiang Xiaomei
Dang Zhuqing
Abstract：Three-year-old peach trees ( Ruipan 17 and Ruipan 21 ) were used as materials to study the effects of application rate of bag-controlled release fertilizer on the contents of soil available nutrients and peach growth and fruiting.The results showed that the application rate of bag-controlled release fertilizer af-fected its nutrient releasing.From May to June, the release amount of nutrients decreased as the application rate of bag-controlled release fertilizer increased.The nutrient release amount of the treatment with 3 bags per plant increased by 13.95%and 22.37%respectively compared to that of treatments with 5 and 7 bags per plant.In the middle and later period ( from July to September) , the nutrient release amounts of all treatments declined overall, and that of treatment with 3 bags per plant was significantly lower than that of the other treat-ments from August to September.The contents of soil available nutrients ( nitrogen, available phosphorus and available potassium) increased with the increasing application rate of bag-controlled fertilizer.The contents of soil available nutrients were higher in the 0~40-cm layer, which was obviously affected by the application rate of bag-controlled fertilizer with significant differences between treatments.In the rapid growth period of the medium maturing variety Ruipan 17, the growth of shoots, chlorophyll content, fruit yield and quality of 5-bag treatment were all the highest, and its yield increased by 22.2%,26.4% and 48.4% respectively compared to 3-bag treatment, 7-bag treatment and CK.But for the late maturing variety Ruipan 21, 7-bag treatment had the highest yield and the best quality, and its yield increased by 18.5%, 27.0%and 37. 7%respectively compared to that of 5-bag and 3-bag treatments and CK.
Keywords：Peach treeBag-controlled release fertilizerApplication rateAvailable nutrientsYieldQuality
Publication Date：2014-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 57-62 )