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Kaohsiung District Agricultural Research and Extension Station

首頁 > 出版刊物 > Kaohsiung District Agricultural Research and Extension Station > Vol.12(2) > 3. Nutrient Studies on Yu Her Pao Lychee Orchards in South Taiwan

3. Nutrient Studies on Yu Her Pao Lychee Orchards in South Taiwan

RESEARCH BULLETIN OF KAOHSIUNG DISTRICT AGRICULTURAL IMPROVEMENT STATION
Volume 12, Number 2 June, 2001

Nutrient Studies on Yu Her Pao Lychee Orchards in South Taiwan

Yong-Hong Lin, Chiou-Mei Sheu and Chun-Hsien Yeh(1)

Abstract

 The aims of this study were to investigate the contents of soil and leaf nutrients, and to establish the method and the reference of nutrient diagnosis as guides for fertilization improvement for Yu Her Pao lychee. Fourteen orchards located in Kao-Ping district were chosed to survey the soil and leaf nutrients during different stages. The results showed that the soil pH of 50% orchards were in suitable range, and organic matter were all low. Available Ca and Mg were low, too. The average content of leaf N, P and K were all highest before application of basal and were lowest during anthesis stage. The average content of Ca and Mg were highest during fruit set stage, and were lowest before application of basal. The correlation between leaf nutrients and yield is highest during anthesis stage, so we should sample the leaf below the panicle during anthesis stage.When combining the leaf nutrients during anthesis stage and another reference which about lychee nutrients, we get the tentative criteria of leaf nutrients at anthesis stage for Yu Her Pao, N:0.79~1.30%, P:0.09%~0.18%, K:0.35~0.73%, Ca:0.575~1.13%, Mg:0.28~0.40%, Fe:34.7~254.3 mg kg-1, Mn:182.7~409.3 mg-1.

Key words: Yu Her Pao Lychee, Anthesis stage, Nutrient diagnosis.

1.Assistant Entomologist, Employee and Technician, department of soil and fertilizer of Kaohsiung DAIS.

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