Simulating the effects of changing planting date towards rice production in MADA area, Malaysia

Journal of Tropical Agriculture and Food Science Pub Date : 2015-01-01 DOI:10.36738/jtafs.2015.43.1.1

A. T. S. Azdawiyah, A. Hariz, M. Fairuz, A. Zabawi

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引用次数: 3

Abstract

The effect of changing the planting date on rice production was simulated by using Decision Support System for Agrotechnology Transfer (DSSAT 4.5) software for both off-season and main season in the area of MADA under expected climate change. Daily weather data on maximum and minimum temperature, solar radiation and rainfall up to year 2060 were obtained from the Malaysian Meteorological Services which are generated from climate model i.e. Providing Regional Climate for Impacts Studies (PRECIS). Simulations using DSSAT 4.5 were then carried out to predict yield production under forecasted weather conditions to analyse the impact of weather trends on yield. Results showed that averaged seasonal daily solar radiation and seasonal total rainfall have the most significant impact on annual yield production. DSSAT 4.5 was applied again to simulate future rice production grown in MADA area for offseason and main season under five different planting dates. Results show that generally for the main season, shifting planting date increased rice productions whereas for the off-season, rice production decreased when planting date shifted. This can be identified as a non-cost climate change adaptation strategy for rice cultivation in MADA area. Keywords: rice production; DSSAT 4.5; planting date; climate change adaptation; PRECIS

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模拟改变种植日期对马来西亚MADA地区水稻生产的影响

利用DSSAT 4.5软件模拟了气候变化预期条件下MADA地区水稻淡季和主季种植期变化对水稻生产的影响。每日最高和最低温度、太阳辐射和降雨量的天气数据，由马来西亚气象部门提供，这些数据是由气候模式产生的，即提供区域气候影响研究(PRECIS)。然后利用DSSAT 4.5进行模拟，预测天气条件下的产量，分析天气趋势对产量的影响。结果表明，季节平均日太阳辐射和季节总降雨量对年产量的影响最为显著。再次应用DSSAT 4.5模拟了5个不同种植日期下MADA地区休季和主季的未来水稻产量。结果表明，在主要季节，水稻产量增加，而在淡季，水稻产量随着种植日期的变化而下降。这可以确定为MADA地区水稻种植的无成本气候变化适应策略。关键词:水稻生产;DSSAT 4.5;种植日期;适应气候变化;摘要

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