填闲作物对日光温室土壤理化性状及黄瓜产量的影响

Effects of Catch Crops on Soil Physicochemical Properties and Cucumber Yield in Solar Greenhouse

针对日光温室黄瓜生产中存在土壤理化性状劣化、土壤板结、盐渍化、酸化等土壤退化问题,在保证黄瓜产量的前提下,夏季休闲期选择玉米、大葱作为填闲作物,以农民传统的常规休闲作为参比对象,研究玉米、大葱对保护地土壤理化性状以及对黄瓜产量的影响。研究结果表明:夏季休闲时期种植玉米和大葱,能够明显降低土壤电导率EC、速效钾、硝态氮含量;种植玉米在改善土壤pH方面的效果好于种植大葱;种植填闲作物对土壤中全氮、速效磷的影响不大。种植玉米、大葱没有影响下茬黄瓜的产量以及外观品质。

The soil environment of solar greenhouse deteriorate with the growing ages increased and this causes the obstacle matters in soil of succession planting cucumber, mainly perform as soil physicochemical properties worsening, soil hypo - salinization, soil acidification . To solve these problems, corn and spring onion as catch crops were planted in summer after cucumber harvest that based on having no effect on cucumber production in solar greenhouse.. The experiment researched the effect of different catch crops on cucumber yield and soil physicochem- ical properties. The resuhs indicated that the soil salt , soil available K and soil NO3 - - N reduced significantly through nutrient uptake by growing corn and spring onion in summer. Growing corn is better than growing spring onion in improving soil pH. Growing corn and spring onion did not have significantly affect on soil total N and soil available P. The growing corn and spring onion in summer has no effect on cucumber yield and extrinsic quality.