欢迎来到天天文库
浏览记录
ID:28576249
大小:106.04 KB
页数:13页
时间:2018-12-11
《不同氮水平处理下滴灌棉花气孔导度与土层(10 cm)田间持水率之间的响应特征》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、不同氮水平处理下滴灌棉花气孔导度与土层(10cm)田间持水率之间的响应特征 摘要:为了揭示滴灌棉花节水节肥效果,为滴灌棉花节水节肥提供技术参数和理论依据,以新陆早42号为试验材料,采用滴灌盆栽试验,研究滴灌棉花气孔导度与土层(10cm)的田间持水率之间的响应关系,获得蕾期和花铃期不同施N水平条件下其相关性和模型。结果表明,在蕾期不同处理纯N分别为2,4,6g?盆-1的条件下,气孔导度与土层10cm的田间持水率之间呈负相关关系,相关性系数(r)分别为-0.859,-0.863,-0.934,T检验显著水平P为0.062,0.059,0.020;6g
2、?盆-1处理的拟合模型为线性函数,模型拟合决定系数(R2)为0.872,F检验显著水平P为0.020,达到显著水平;花铃期,气孔导度与土层10cm的田间持水率之间呈正相关关系,相关性系数(r)分别为0.918,0.750,0.867,T检验显著水平P为0.028,0.144,0.057;2g?盆-1处理的拟合模型为指数函数,模型拟合决定系数(R2)为0.891,F检验显著水平P为0.016,达到显著水平。该函数模型很好地描述了滴灌棉花气孔导度与土层10cm的田间持水率之间的相关关系,为内陆干旱区绿洲农业滴灌棉花耗水量的估算提供了新的计算方法和理论依
3、据。 关键词:滴灌;盆栽;棉花;气孔导度;田间持水率 中图分类号:S562文献标识码:ADOI编码:10.3969/j.issn.1006-6500.2015.11.001 ResponseCharacteristicsbetweenDripIrrigationCottonStomatalConductanceandFieldCapacityof10cmSoilLayerunderDifferentConditionsofNitrogenFertilizers ZHANGJian-xin1,HEJiang-yong1,SHIRong-yua
4、n2 (1.InstituteofIrrigationandWaterConservancyandSoilandFertilizerofXinjiangAcademyofAgriculturalandReclamationSciences,ShiheziCity,Xinjiang832000,China;2.PaotaiSoilImprovementTestStationofEighthDivision,XinjiangProductionandConstructionCorps,ShiheziCity,Xinjiang832066,China)
5、 Abstract:Torevealthewater-savingandfertilizer-savingeffectofthedripirrigationcottonandprovidetechnicalparametersandtheoreticalbasis,theNo.42XinluzaoCottonwastakenasexperimentalmaterial,theexperimentalmethodofdripirrigationpottingwasadoptedtostudytheresponserelationshipbetwee
6、nthedripirrigationcotton’sstomatalconductanceandthefieldcapacity10cmbeneaththeground,acquiringthecorrelationandmodeloftheblossomingstageandthebudstageunderdifferentnitrogenfertilizerlevels.Theresultsshowedthatduringthebudstageofcotton,therewasnegativecorrelationbetweenstomatal
7、conductanceandfieldcapacity10cmbeneaththegroundunderthenitrogenfertilizerlevelof2,4,6gperpot(N),andtherelativecoefficients(r)were-0.859,-0.863,-0.934,thesignificantlevelPofTtestwere0.062,0.059,0.020;thefittingmodelof6gperpot(N)waslinearfunction,themodelfittingdeterminationcoef
8、ficients(R2)was0.891,andthesignificantlevelPofFtestwas0.016,r
此文档下载收益归作者所有