不同贮藏条件下棉花和大豆种子的水分变化规律及其预测模型  

Moisture Variation and Modeling of Cotton and Soybean Seeds under Different Storage Conditions

作　　者：王婧[1] 姜朋[1] 李栋[1,2] 马强[1,2] 台述金[1] 左振朋[1] 董鲁浩[1] 孙庆泉[1] 

机构地区：[1]山东农业大学农学院/作物生物学国家重点实验室,山东泰安271018 [2]山东省种子管理总站,山东济南250100

出　　处：《作物学报》2010年第7期1161-1168,共8页Acta Agronomica Sinica

基　　金：山东省优秀中青年科学家奖励基金(2005BS06010);国家重点基础研究发展计划(973计划)项目(2006CB101700);山东省良种工程产业化项目(鲁农粮种字[2008]6号)资助

摘　　要：以不同初始水分(IMC)大豆和棉花种子为试材,研究不同贮藏条件下的吸湿解吸规律,并建模验证。结果表明,大豆种子,贮温15℃、25℃和40℃时,4%IMC在相对湿度(RH)≤18.78%、8%和12%IMC在RH≤48.10%条件下解吸,其他条件下吸湿。棉花种子,15℃时,4%IMC在RH≤7.49%、8%IMC在RH≤18.78%和12%IMC在RH≤48.10%条件下解吸,其他条件下吸湿;25℃时,4%IMC在RH≤18.78%、8%和12%IMC在RH≤48.10%条件下解吸,其他条件下吸湿;40℃时,4%IMC在RH≤7.49%、8%和12%IMC在RH≤48.10%条件下解吸,其他条件下吸湿。棉花种子,4%IMC在15℃RH>55%、25℃RH>55%和40℃RH>50%时的安全水分(SWC)依次为10.5%、9.5%和6.5%;8%IMC在15℃RH>60%、25℃RH>55%和40℃RH>45%时的SWC分别为10.5%、9.5%和6.5%;12%IMC在15℃RH>55%、25℃RH>55%和40℃RH>45%时的SWC分别为10.5%、9.5%和6.5%。辽豆11在15℃RH>60%、25℃RH>55%和40℃RH>45%时,其平衡水分(EMC)超过其SWC(依次为12%、11%和8%);菏豆13在相同条件下水分平衡时的RH比辽豆11高5%。棉花种子EMC在15和25℃RH>55%、40℃RH>60%时超过其SWC;大豆种子EMC在25℃RH>55%、25℃和40℃RH>60%时超过其SWC。棉花种子的水分平衡时间(d)与IMC(x)、RH(y)和温度(z)的预测模型为d=36.97+1.78x-0.58y-0.58z-0.016xy-0.021xz-0.0012yz+0.007y^2,辽豆11的为d=23.29+3.72x-0.19y-0.86z-0.02xy-0.09xz-0.008yz+0.005y^2+0.03z^2,菏豆13的为d=48.64+0.36x-0.44y-1.49z-0.008yz+0.006y^2+0.026z^2。模型经检验,预测性良好。The seed equilibrium moisture is an important indicator in evaluating dynamic changes of seed moisture absorption or moisture desorption. In this study, soybean and cotton seeds with different initial moisture contents （IMC） were used to explore the laws of the seed moisture absorption or moisture desorption trader different storage conditions（temperature and humidity）. The soybean seeds presented moisture desorption when the storage temperature（ST） was 15 ℃, 25 ℃, 40℃ and the relative humidity （RH） was less than 18.78% （4% IMC） or 48.10% （8% IMC and 12% IMC）, and presented moisture absorption in other storage conditions. The cotton seeds presented moisture desorption under conditions of ST=15 ℃ and RH〈7.49% （4% IMC）, 18.78% （8% IMC） or 48.10% （12% IMC）. The cotton seeds also presented moisture desorption when ST=25℃, RH〈18.78% （4% IMC） or 48.10% （8% IMC and 12% IMC）, or ST=40℃, RH〈7.49% （4% IMC） or 48.10% （8% IMC and 12% IMC）, and moisture absorption in other storage conditions. The safety water content of the cotton seeds with 4% IMC under the condition of ST=15 ℃ and RH〉55%, ST=25℃ and RH〉55%, or ST=40℃ and RH〉50% was 10.5%, 9.5% and 6.5%, respectively. For cotton seeds with 8% IMC, the safety water content under the condition of ST=15℃ and RH〉60%, ST=25℃ and RH〉55%, ST=40℃ and RH〉45% was I0.5%, 9.5% and 6.5%, respectively. The cotton seeds with 12% IMC had the same safety water content under the condition of ST=15℃ and RH〉55%, ST=25℃ and the RH〉55% or ST=4℃ and RH〉45%. The equilibrium moisture of Liaodou 11 with 4%, 8% and 12% IMC under the condition of ST=15℃ and RH〉65%, ST=25℃ and RH〉55% or ST=40℃ and RH〉45% was above its safety water content （12%, 11%, and 8%）. The RH which was above its safety water content of Hedou 13 was about 5% higher than that of Liaodou 11. The equilibrium moisture was above its safety water content when ST=15℃, 25℃ and RH〉55% or ST=40℃ and RH〉60% for c

关 键 词：棉花种子 大豆种子 吸湿解吸 建模 模型验证 

分 类 号：S562[农业科学—作物学] S565.1