日光温室小管出流条件下甜椒灌溉制度试验研究

Experimental Research on Pepper Irrigation Regime Under Small Tube Flow in Greenhouses

通过田间小区试验研究了日光温室小管出流条件下土壤水分变化对甜椒的长势指标(株高、茎粗、叶面积)、产量和果实品质的影响,并通过综合分析得出甜椒的适宜灌溉制度。研究表明:土壤水分在青椒各生育期内的下限控制范围为苗期50%～60%;田持、开花坐果期60%～70%;田持、结果期70%～80%。田持时,青椒的长势、产量、果实品质及水分利用效率均呈表现优良。青椒在温室中小管出流条件下的适宜灌溉制度为整个生育期的灌水量为200.64mm;苗期灌水定额为15mm,灌水2次;开花坐果期和结果期灌水定额为22mm,灌水8次。

This paper studies the effect of soil moisture on pepper growth performance（plant height,stem diameter and leaf area）,yield and fruit quality.Moreover,it presents an appropriate pepper irrigation regime on the basis of a comprehensive analysis.The results show that the growth performance of pepper,the pepper yield,fruit quality and water use efficiency are in better or the best state when the lower limit range of soil moisture are 50%～60% of field moisture capacity during seedling,60%～70% of field moisture capacity during flowering and 70%～80% of field moisture capacity during the fruiting period.The appropriate pepper irrigation regime is that the total amount of irrigation water during the whole growing period is 200.64 mm,the amount of water is 15 mm and irrigation times is 2 during seeding,the amount of water is 22 mm and irrigation times is 8 during both flowering and fruiting in the greenhouse.