Effects of Controlled Release Nitrogen Fertilizer on Yield and NitrogenContent of Soil and Apple Tree

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (1): 43-46.

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Effects of Controlled Release Nitrogen Fertilizer on Yield and NitrogenContent of Soil and Apple Tree

SHAO Lei¹; ZHANGMin^1*; CHEN Xue-sen²;WANG L i-xia³

(¹College of Resources and Environm ent, Taipan, Shandong 271018, China; ²College of Horticulture, Taipan, Shandong271018, China; ³College of Food Science, Shandong Agricultural University, Taipan, Shandong 271018,China)

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-25 Published:2007-02-25

Abstract

Abstract:

Nitrogen release experiment and field experimentwere conducted to study release characteris
tics of the controlled2release fertilizer (CRF) coated with hydrophobic material (organic macromolecule poly
mer) and its effects on yield and quality of app le as compared to common urea. Three release stages were
found in nitrogen release curve: increasing stage, peak stage, decreasing stage. Field experiment showed that
controlled-release pattern of CRF met the nitrogen requirements of app le trees, and then p romoted its growth,
yield and quality.

Key words: Apple, Controlled release nitrogen fertilizer, Yield

SHAO Lei;ZHANGMin;CHEN Xue-sen;WANG L i-xia. Effects of Controlled Release Nitrogen Fertilizer on Yield and NitrogenContent of Soil and Apple Tree[J]. ACTA HORTICULTURAE SINICA, 2007, 34(1): 43-46.

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Effects of Controlled Release Nitrogen Fertilizer on Yield and NitrogenContent of Soil and Apple Tree

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