Dynamic Simulation of Maize Leaf Area Index in Hetao Region

doi:103969/jissn1000-6362201403007

Abstract

Abstract: The maize experiment was conducted with 7 different sowing stages from April 1, with interval 10 days in Hetao region A dynamic model of maize leaf area index (LAI) was established by observing meteorological conditions in maize growth duration and investigating maize leaf area index in different sowing date Firstly, the pervasive model was established taking phyological date as independent variable, which had certain limitation to express the LAI growth of maize The model calculated that the maximum LAI was found in 23-26 days after silking stage for 1st-4th sowing stage, and 13-19 days after silking stage for 5th -7th sowing stage Secondly, the model was modified by taking accumulation temperature as independent variable, which also had certain limitation to express the LAI growth of maize as the model did not removed accumulation temperature ≤10℃The model calculated that the range of active accumulation temperature for maximum LAI was 1901.2-1996.7℃·d for 1st-4th sowing stage, and 1579.7-1825.6℃·d for 5th-7th sowing stage Finally, the pervasive dynamic model on maize relative LAI was established with modified logistic equation, which undergone the significant test (P≤0.01) The maximum LAI value was found at active accumulated temperature 1004.4℃·d after seeding The results could provide reference for simulation accurate to maize leaf growth and distribution of photosynthate

Key words: Maize, Accumulation temperature, Leaf area index, Model

KONG De yin, YANG Song, HANG Shu qin, LI Xue bing, YANG Qin yu. Dynamic Simulation of Maize Leaf Area Index in Hetao Region[J]. Chinese Journal of Agrometeorology, 2014, 35(03): 281-286.

References

[1]浦瑞良，宫鹏.高光谱遥感及其应用[M].北京：高等教育出版社，2000：123-144.
[2]张旭东，蔡焕杰，付玉娟，等.黄土区夏玉米叶面积指数变化规律的研究[J].干旱地区农业研究，2006，24（3）：25-29.
[3]麻雪艳，周广胜.春玉米最大叶面积指数的确定方法及其应用[J].生态学报，2013，33(8)：2596-2603.
[4]王玲，谢德体，刘海隆，等.玉米叶面积指数的普适增长模型[J].西南农业大学学报(自然科学版)，2004，26(3)：303-306.
[5]张学艺，张磊，黄峰，等.宁夏灌区春小麦叶面积指数的动态模拟[J].干旱地区农业研究，2011，29（1）：193-196.
[6]于强，傅抱璞，姚克敏.水稻叶面积指数的普适增长模型[J].中国农业气象，1995，16(2)：6-8.
[7]孔德胤，智海，张富强，等.河套地区覆膜与裸地玉米随地积温变化的生长动态模型[J].中国农业气象，2008，29(1)：67-70.
[8]林忠辉，项月琴，莫兴国，等.夏玉米叶面积指数增长模型的研究[J].中国生态农业学报，2003，11(4)：69-72.
[9]国家气象局.农业气象观测规范[M].北京：气象出版社，1993：28-30.
[10]杨永岐.农业气象中的统计方法[M].北京：气象出版社，1983：2-181.
[11]王信理.在作物干物质积累的动态模拟中如何合理运用Logistic方程[J].中国农业气象，1986，7(1)： 14-19.
[12]吴东兵，曹广才.我国北方高寒旱地玉米的三段生长特征及其变化[J].中国农业气象，1995，l6(4)：7-10.
[13]Yin X Y，Martin J K，McLaren G，et al.A nonlinear model for crop development as a function of temperature[J].Agricultural and Forest Meteorology，1995，77：1-16．
[14]Yan M H，Liu X T，Zhang W，et al.Spatiotemporal changes of ≥10℃ accumulated temperature in northeastern China since 1961[J].Chinese Geographical Science，2011，21(1)：17-26．
[15]孙孟梅，姜丽霞，于荣环，等.玉米生育期热量指标及其不同品种栽培北界的研究[J].中国农业气象，1998，19(4)：8-12.
[16]孙睿，洪佳华，曹永华.夏玉米光合生产模拟模型初探[J]．中国农业气象，1997，18(2)：20-23．
[17]罗新兰，陈祥兰，姚运生，等.东北玉米叶面积指数动态模拟模型研究[J]．江苏农业科学，2012，40(1)：91-94.