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机构地区:[1]沈阳农业大学土地与环境学院,沈阳110161
出 处:《灌溉排水学报》2011年第2期60-62,共3页Journal of Irrigation and Drainage
基 金:辽宁省教育厅A类项目(413010206)
摘 要:分别在喷施氯化钙溶液质量分数为0%、0.3%、0.5%、0.8%、1.0%条件下进行3种不同灌水方式即常规全根灌溉(CI)、分根区固定灌溉(PRD)和分根区交替灌溉(APRI)的盆栽试验,测定番茄产量和品质。结果表明,分根区交替灌溉(APRI)番茄植株长势、果实产量和品质均显著优于分根区固定灌溉(PRD)和常规全根灌溉(CI)。在施钙条件下,APRI处理番茄产量比CI处理提高1.35%,而PRD处理比CI处理降低18.19%。钙溶液质量分数在0%~0.8%范围内,随钙肥用量增加果实产量、品质也随之提高。APRI与0.8%质量分数CaCl2处理组合番茄产量最高,为2.69 kg/盆,Vc含量34.89 mg/100g、糖/酸8.8,均优于其他处理。APRI能节约灌水量,对番茄产量有一定的提高作用,并能改善番茄品质;而且APRI与钙素用量合理结合,其有利作用可以得到更好的发挥。five Calcium levels were designed in pot experiment,i.e.CaCl2 solution 0%,0.3%,0.5%,0.8%,1.0%,and three irrigation methods,i.e.,conventional irrigation(CI,soil was evenly irrigated with tap water in each watering),alternate partial root-zone irrigation(APRI,watering was alternately applied to the two halves in the pot in consecutive watering) and fixed partial root-zone irrigation(PRD,watering was fixed to half of the soil in the pot).Yield and quality of tomato were measured.Results show that compared to CI treatment,APRI and PRD treatments reduced irrigation water by 30%.Under different Ca levels,APRI treatment improved tomato plants growth and increased tomato yield and quality.But PRD treatment reduced tomato yield by 18.19% when compared to CI treatment.At the same time,Ca enhanced tomato yield and quality within CaCl2 0% to 0.8%.The highest yield,Vc content and ratio of sugar/acid were obtained in APRI×CaCl2 0.8% treatment.The above-mentioned results indicate that APRI not only saved irrigation water,but also enhanced the tomato yield and improved tomato quality.And the effect of APRI should be better materialized under appropriate fertilization.
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