อิทธิพลของพันธุ์ข้าวและชุดดินต่อการปลดปล่อยก๊าซมีเทนจากนาข ้าว

Influence of Rice Varieties and Soil Series to Methane Emission from Rice Field

Name: อรณิศา จิตตสาตรา

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

keyword: พันธุ์ข้าว

; ก๊าซมีเทน

Abstract: Rice field is one of the major greenhouse gas (methane) particularly in the agricultural counby. This thesis studies the methane emission fmm rice fields influenced by two factors; rice varieties and soil series. The comparison between these two fictors is also discussed. Firstly, rice varieties of major popular plantation area in Thiland namely Suphanburil, Suphanburi90, Chahtl, RD15 dSuphanburi60 were cultivated in Ratchaburi series at Inburi district, Singburi province with the same rice ecosystem and fextilizer supplement. Later three different plantation locations with different soil series namely Ratchaburi series at Inburi district, Singburi province, Bangken series at Sainoi district, Nonthaburi province and Saraburi series at Thamaka district, Ksnchanaburi province were use to culture Chainatl variety in the same ecosystem and fertilizer supplement. Experimental design was randomized complete blocks and the methane emission fiomthe rice paddy field was collected by using static box technique every two weeks during the planting period. The collected methane was analyzed by gas chromatography and estimated as the methane ?lux rate from the paddy field, Methane emission of rice field cultivated with rice varieties shown the range of emission fiom 28.21-34.89 &/crop (2.69-3.32 kglhdd). The sequence fiom highest to lowest emission were Suphanburi90 > RD15 > Suphanburi60 > Suphanburil > Chainatl with the integrated methane emission of 34.89 (3.321, 33.09 (3.15), 32.57 (3.10), 29.35 (2.79) and 28.21 (2.69) g/m21crop (kghald), respectively. The field without rice cultivation emitted methane 49.97 glm21mp (4.76 kg/ha/d) in the same ecosystem. The experiment shown that the ratio of methane emission to rice yield, when using Chainatl, expressed the lowest ratio of 0.061 kg methanekg product. The physical characteristics of rice plant such as height, number of leaves and air space in rice stem shown linear relationship to methane emission with sqpificantly different between varieties. The amount of methane production in the same ecosystem and plantation condition is hypothesized to be the same, the difference of the methane emission is, therefor, influence by the physical characteristics of each varieties. Methane emission of rice field cultivated with the same rice varieties, Chainatl, in three different soil series shown the range of emission hm 9.36-28.21 g/m21mp (0.89-2.69 kglhidd). The sequence from highest to lowest emission were Ratchaburi series > Bangken series > Saraburi series with the integrated methane emission of 28.21 (2.69), 11.86 (1.13) and 9.36 (0.89) g/m2/mp (kg/ha/d), respectively. The experiment shown that the ratio of methane emission to rice yield, cultivated in Saraburi series, expressed the lowest ratio of 0.022 kg methanekg product The chemical characteristics of soil series such as organic cahn, nitrogen, phosphorus and potassium shown linear relationship to methane emission flux rate. The amount of methane emission with the same rice varieties is hypothesized to be the same, therefor, the difference of the methane production is influenced by the chemical characteristics of each soils series. It is noted that the factor of soil series influenced higher uncertainties than the fbctor of rice varieties due to itsbroader range of methane emission flux nte.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: สิรินทรเทพ เต้าประยูร

Role: อาจารย์ที่ปรึกษา

Name: ศศิธร พุทธวงษ์

Role: อาจารย์ที่ปรึกษา

Created: 2542

Issued: 2007-01-24

Modified: 2011-06-02

วิทยานิพนธ์/Thesis

ISBN: 9746247506

CallNumber: EV177

tha

eng

DegreeName: วิทยาศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีสิ่งแวดล้อม

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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