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作 者 ：李广,黄高宝*,William Bellotti,陈文

期 刊 ：生态学报 2009年 29卷 5期 页码：2655~2663

关键词：APSIM；黄土丘陵区；耕作措施；适用性；

Keywords:APSIM, loess hilly region, tillage systems, adaptation,

摘 要 ：为了揭示黄土丘陵区不同耕作措施对作物生长发育和土壤水分的影响及相互作用规律，根据2002～2005年两个轮作序列（小麦→豌豆（W→P）和豌豆→小麦（P→W））的3种耕作措施（传统耕作（T）、免耕（NT）和免耕覆盖（NTS））的定位试验，对APSIM模型的适用性进行了研究。通过定位试验得到了一套APSIM模型的参数值，并对其进行了率定。运用均方根误差法对APSIM模型进行检验，结果表明：小麦和豌豆产量与生物量的模拟值与实测值具有显著的正相关（R＞0.9），误差范围在±15%之内；土壤贮水量的模拟值与实测值也具有显著的正相关（R＞0.7），误差范围在±20%以内。表明APSIM模型可以用来模拟不同耕作方式和不同轮作序列的小麦和豌豆产量、生物量及土壤水分的动态变化，模型可以用于指导作物生产及耕作措施的优化管理。

Abstract:APSIM model was used to simulate crop growth and development, soil water dynamics and their interactions under different tillage systems on the Loess hill-gullied region. A suite of parameters of APSIM model was modified by using the method of standard deviation based on data from two rotational sequences (wheat→pea and pea→wheat) under conventional tillage, no-till and no-till with stubble mulch in 2002-2005. The results showed that the predicted and observed yields and biomass for both wheat and pea were significantly positively correlated (R>0.9) with variation of ±15%. Similar relationship was found between predicted and observed soil storage water (R>0.7) with variation of ±20%. It is suggested that APSIM model can be used to simulate crop yields, biomass and soil water dynamics under different tillage systems with different crop sequences and optimize crop production and field management.

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