CHEN Yuehao,XUE Qingyu,LI Zhenfa,et al.Comparison of Effective Accumulated Temperature of Different Granularities in Simulating Development Stage of Cucumber in Greenhouse[J].Northern Horticulture,2016,40(11):41-45.[doi:10.11937/bfyy.201611011]
不同粒度积温算法对温室黄瓜生育期模拟的比较
- Title:
- Comparison of Effective Accumulated Temperature of Different Granularities in Simulating Development Stage of Cucumber in Greenhouse
- 文献标志码:
- A
- 摘要:
- 基于有效积温法，利用3种不同粒度的温室气温数据，模拟了温室黄瓜的生长发育情况。结果表明：3种积温算法对于黄瓜生育期的模拟均表现出苗期的模拟误差最大，标准误差（RMSE）为12.4 d，采收末期的模拟误差最小，RMSE为1 d。对比3种不同粒度积温算法的模拟效果，日积温法模拟的误差最小，平均误差为-0.6 d；其次是小时积温法，平均误差为-1.8 d；10 min积温模拟的误差最大，为-2.2 d。这说明用有效积温法模拟作物生育期，使用日有效积温来作为模型的输入，其模拟结果较好。另外，3种积温算法在对黄瓜不同生育期的模拟中，除苗期之外，其余各生育期的模拟结果基本一致，无明显差异，定植期误差为5 d和4 d，开花坐果期均为-4 d，采收期均为3 d，采收末期均为1 d。说明有效积温法对于不同粒度的积温敏感性不强，而对于昼夜温度变化比较敏感。
- Abstract:
- According to the effective accumulated temperature(EAT) method，the growth and development of cucumber was simulated based on three different granularities temperature data in greenhouse.The results showed that the simulation error of seedling stage was maximum，the root mean square error(RMSE) was 12.4 days，the error of latest harvesting stage was minimum，RMSE was 1 days.Comparison of effective accumulated temperature of different granularity in simulating，the simulated error of effective accumulated temperature of days was minimum，the average error was -0.6 days；the effective accumulated temperature of hours was -1.8 days；the simulated error of effective accumulated temperature of 10 minutes was maximum，the average error was -2.2 days.This showed that the method of effective accumulated temperature was simulated in development stage of crops，the effective accumulated temperature of days was used of simulating in development stage of crops，the simulation result was better.In addition，three granularities of effective accumulated temperature were simulated in different development stages of cucumber，the simulation results of the development stages were basically identical except seedling stage，no obvious difference was showed.The error of transplanting stage was 5 days and 4 days，the flowering and fruit setting stage was -4 days，the harvesting stage was 3 days，and the latest harvesting stage was 1 days.Therefore，the method of effective accumulated temperature was not sensitive to different granularities accumulated temperature，and it was sensitive to change of diurnal temperature.
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备注/Memo
第一作者简介：陈跃浩（1988-），男，硕士，助理工程师，现主要从事农业气象等研究工作。E-mail:chenyuehao888@163.com.责任作者：黎贞发（1964-），男，本科，研究员级高级工程师，现主要从事设施农业气象等研究工作。E-mail:lzfaaa@126.com.基金项目：天津市科技计划资助项目（13ZCZDNC00300）；科技部公益性行业专项资助项目（GYHY201306039）。