摘要
为了解不同添加量下有机肥配施生物炭对设施蔬菜品质、产量及氮、磷、重金属在土壤中迁移累积的影响。以设施番茄为试验对象,设5个处理:CK(1 500 kg·hm^(-2)生物炭)、T1(1 500 kg·hm^(-2)生物炭+7 500 kg·hm^(-2)鸡粪肥)、T2(1 500 kg·hm^(-2)生物炭+15 000 kg·hm^(-2)鸡粪肥)、T3(1 500 kg·hm^(-2)生物炭+22 500 kg·hm^(-2)鸡粪肥)、T4(1 500 kg·hm^(-2)生物炭+30 000 kg·hm^(-2)鸡粪肥),测定番茄产量,可溶性糖、维生素C、硝酸盐、可滴定酸含量及土壤样品中的硝态氮、速效磷、全Cu和Pb含量。结果发现:相对于CK,T2的番茄产量增加49.31%,可溶性糖和维生素C含量达2.275 mg·kg^(-1)和0.219 mg·kg^(-1),表明T2处理能够提高番茄产量和品质;同时,T2处理降低土壤中0~100 cm土层硝态氮、速效磷以及0~30 cm土层重金属Cu和Pb的累积及迁移;T1、T3和T4加重土壤中氮磷及重金属的累积与迁移。表明设施蔬菜种植过程中有机肥与生物炭的合理配施可以减少有机肥的氮磷和重金属的污染,提高设施菜地土壤质量,保证蔬菜食品安全性。
This study investigated the effects of different amounts of organic fertilizer combined with biochar on the quality and yield of greenhouse vegetables,as well as the accumulation and migration of soil nutrients and heavy metals in the soil profile.The greenhouse tomatoes were used as objective,five treatments were set up.These treatments consisted of CK(1500 kg·hm^(-2)biochar+7500 kg·hm^(-2)chicken manure),T1(1500 kg·hm^(-2)biochar+15000 kg·hm^(-2)chicken manure),T2(1500 kg·hm^(-2)biochar+15000 kg·hm^(-2)chicken manure)T3(1500 kg·hm^(-2)biochar+22500 kg·hm^(-2)chicken manure)and T4(1500 kg·hm^(-2)biochar+30000 kg·hm^(-2)chicken manure).The yield of soluble sugar,vitamin C,nitrate,and titratable acid,as well as the levels of nitrate nitrogen,available phosphorus,total copper(Cu),and lead(Pb)in the soil were determined.The results showed that compared with CK treatment,the contents of soluble sugar and vitamin C in tomato under recommended fertilization treatment(T2)reached 2.275 and 0.219 mg·kg^(-1),and the yield increased by 49.31%,showing that T2 treatment improved the yield and quality of tomato;while T2 treatment also reduced the accumulation and migration of nitrate nitrogen and available phosphorus at 0-100 cm soil layer and heavy metals Cu and Pb at 0-30 cm soil layer;T1,T3 and T4 increased the accumulation and migration of soil nitrogen,phosphorus and heavy metals.In conclusion,the appropriate application of organic fertilizer and biochar during protected vegetable cultivation can mitigate the pollution of nitrogen,phosphorus and heavy metals.In addition,it improves the soil quality of protected vegetable fields and ensures the safety of vegetable food production.
作者
张红娟
陈梦华
何珊珊
许多
孙慧敏
ZHANG Hongjuan;CHEN Menghua;HE Shanshan;XU Duo;SUN Huimin(Department of Biological Engineering,Yangling Vocational&Technical College,Yangling Shaanxi 712100,China;College of Natural Resources and Environment,Northwest A&F University,Yangling Shaanxi 712100,China)
出处
《西北农业学报》
CAS
CSCD
北大核心
2023年第12期1978-1986,共9页
Acta Agriculturae Boreali-occidentalis Sinica
基金
十三五国家重点研发计划(2018YFD0800401)。
关键词
设施番茄
鸡粪肥
生物炭
硝态氮
速效磷
重金属
Facility tomato
Chicken manure
Biochar
Nitrate nitrogen
Available phosphorus
Heavy metal
