夏季填闲作物对日光温室土壤环境的影响

针对日光温室随种植年限的增加,土壤环境恶化的问题,利用温室夏季休闲期设计了4种填闲作物,研究其对温室土壤环境的影响。结果表明:夏季休闲期间种植大葱改善了土壤微生物区系,细菌和放线菌数量增多,真菌数量减少,B/F值显著升高,镰刀菌下降了69.17%,同时降低了土壤养分的积累。夏季休闲期间种植甜玉米可大量吸收土壤中多余的营养成分,但真菌数量偏高,B/F值与对照相比相差不大;种植速生叶菜虽然能降低土壤盐分含量,但对降低黄瓜致病菌数量和改善微生物区系组成方面无显著效果;豆科作物毛苕子在一定程度上降低了土壤盐分含量,但土壤微生物总量有所减少。

Effect of Summer Catch Crops on Soil Environment in Solar Greenhouse

To solve the problem of soil environment deterioration as the growing ages increased in the solar greenhouse,the experiment researched the effect of four catch crops on the soil environment in the solar greenhouse.The results indicated that the growing spring onion in summer could improve the microflora,increase the number of bacteria and antino-myce,reduce the number of fungi,improve the ratio of B/F greatly,reduce the number of fusarium by 69.17% and reduce the number of nutrient in the soil.Growing sweet corn in summer could absorb redundant nutritional ingredients largely in the soil,but the number of fungi was high and the ratio of B/F is not obvious compared with CK.On the contrary,planting leafy vegeta-bles had no obvious effect on the composing of soil microbe and the decruce of the number of pathogen of cucumber,although it could reduce the content of salty in the soil.The crop green manure of villose vetch could reduce the content of salty in the degree,but the sum of microbe in the soil reduced a little.