福建农业学报
福建農業學報
복건농업학보
FUJIAN JOURNAL OF AGRICULTURAL SCIENCES
2014年
12期
1186-1191
,共6页
任丽花%余华%刘文静%罗土炎%罗钦
任麗花%餘華%劉文靜%囉土炎%囉欽
임려화%여화%류문정%라토염%라흠
甘薯%生物量%养分吸收与分配%品质
甘藷%生物量%養分吸收與分配%品質
감서%생물량%양분흡수여분배%품질
sweet potato%biomass%nutrient absorption/distribution%quality
田间小区试验通过不同施肥处理,研究氮磷钾配比对甘薯生物量累积、养分吸收与分配及其品质的影响。结果表明:薯蔓并长期甘薯的块根及茎叶在全素(NPK)处理下均能获得较大的生物量累积,块根中的养分含量也相对较高。与全素(NPK)相比,氮、磷、钾缺乏不同程度地影响了甘薯块根及茎叶的生物量累积,其中氮磷钾均缺乏(CK)影响最大,氮肥其次;缺氮显著影响了甘薯块根中氮的吸收,显著增加了甘薯各器官钾元素的吸收,对各器官磷的吸收影响不显著;缺磷显著降低了甘薯块根中氮和钾的含量,而缺钾增加了甘薯块根中氮的吸收,但对甘薯各器官的磷含量影响不显著。另外,氮、磷、钾缺乏降低了甘薯块根中的养分含量,作为一种淀粉类作物,淀粉含量在氮磷钾均缺乏(CK)情况下最低,其次是缺氮处理,但缺氮与缺磷和缺钾处理相比无明显差异。以上结果表明,除氮磷钾均缺乏情况,缺氮对薯蔓并长期甘薯的生长及块根中的养分含量影响最大。
田間小區試驗通過不同施肥處理,研究氮燐鉀配比對甘藷生物量纍積、養分吸收與分配及其品質的影響。結果錶明:藷蔓併長期甘藷的塊根及莖葉在全素(NPK)處理下均能穫得較大的生物量纍積,塊根中的養分含量也相對較高。與全素(NPK)相比,氮、燐、鉀缺乏不同程度地影響瞭甘藷塊根及莖葉的生物量纍積,其中氮燐鉀均缺乏(CK)影響最大,氮肥其次;缺氮顯著影響瞭甘藷塊根中氮的吸收,顯著增加瞭甘藷各器官鉀元素的吸收,對各器官燐的吸收影響不顯著;缺燐顯著降低瞭甘藷塊根中氮和鉀的含量,而缺鉀增加瞭甘藷塊根中氮的吸收,但對甘藷各器官的燐含量影響不顯著。另外,氮、燐、鉀缺乏降低瞭甘藷塊根中的養分含量,作為一種澱粉類作物,澱粉含量在氮燐鉀均缺乏(CK)情況下最低,其次是缺氮處理,但缺氮與缺燐和缺鉀處理相比無明顯差異。以上結果錶明,除氮燐鉀均缺乏情況,缺氮對藷蔓併長期甘藷的生長及塊根中的養分含量影響最大。
전간소구시험통과불동시비처리,연구담린갑배비대감서생물량루적、양분흡수여분배급기품질적영향。결과표명:서만병장기감서적괴근급경협재전소(NPK)처리하균능획득교대적생물량루적,괴근중적양분함량야상대교고。여전소(NPK)상비,담、린、갑결핍불동정도지영향료감서괴근급경협적생물량루적,기중담린갑균결핍(CK)영향최대,담비기차;결담현저영향료감서괴근중담적흡수,현저증가료감서각기관갑원소적흡수,대각기관린적흡수영향불현저;결린현저강저료감서괴근중담화갑적함량,이결갑증가료감서괴근중담적흡수,단대감서각기관적린함량영향불현저。령외,담、린、갑결핍강저료감서괴근중적양분함량,작위일충정분류작물,정분함량재담린갑균결핍(CK)정황하최저,기차시결담처리,단결담여결린화결갑처리상비무명현차이。이상결과표명,제담린갑균결핍정황,결담대서만병장기감서적생장급괴근중적양분함량영향최대。
Effect of varied NPK ratios on the biomass accumulation,nutrient absorption/distribution and quality of sweet potatoes were studied in a field experimentation.During the stage when the tubers and vines were allowed to grow simultaneously,fertilization with complete nutrients (N,P and K)on the sweet potato plants increased the biomasses of the tubers,shoots and leaves,as well as the nutrient contents in the tubers.Shortage on N,P and K was found to be most critical,followed by a lack of N,on the biomass accumulation.N deficiency in the soil affected the N absorption and increased the K assimilations in the tubers,but had no significant effect on the P assimilations of different organs.P deficiency significantly decreased the contents of N and K in the tubers.A deficiency in K raised the N absorption of the tuber,but did not significantly affect the P assimilations of different organs.When NPK were in a short supply,the nutrient content of the tuber was negatively affected.And,the starch content in the tubers was also lower than other deficiency conditions,while N deficiency produced the second lowest starch content in the tubers.However,the difference between N deficient sweet potatoes and P or K deficient counterparts was not significant.The results suggested that,except when N,P and K were all depleted,a shortage on N would affect most on the normal growth and nutrient contents of the sweet potatoes,if the tubers and vines were growing on the plant at the same time.