不同施肥条件下夏季辣椒的生长发育与养分吸收规律研究

通过田间小区试验,研究了辣椒的养分吸收规律和土壤速效养分的动态变化规律,旨在为洞庭湖区实施精确施肥、优化施肥结构以及蔬菜基地养分的系统调控提供科学依据。结果表明:有机无机肥配合施用处理较当地习惯施肥处理和纯化肥处理对氮、磷、钾养分的吸收量和利用率高。蔬菜生育期间,土壤有效氮、磷、钾含量均处于动态变化之中,总的来看,蔬菜专用肥处理土壤有效氮、磷、钾含量较高。根据辣椒对肥料养分的利用率和土壤养分状况及有效性,初步提出了增施有机肥、钾肥的优化施肥结构模式,以保证辣椒的丰产优质。

Study on Characteristics of Growth and Development and Nutrients’ Uptake of Summer Hot Pepper under Different Fertilization Amendments

Through the plot experiment,the rule of nutrients uptake of pepper and the dynamics of available nutrients in soil were studied.All these aimed for precise fertilization,optimizing the structure of fertilization and the scientific basis for the management of plant nutrients of the vegetable base in the Dongting Lake District.The results showed that the uptake capacities and nutrient recovery rates of N,P and K nutrients under the combined application of organic fertilizers and chemical fertilizers were higher than that of the local custom treatment and the pure chemical fertilizer treatment.In pepper growth period,the soil available nitrogen,available phosphorus,available potassium contents were all changing.Generally speaking,the contents of soil available nitrogen,available phosphorus,available potassium of fertilizer for vegetable treatment were high.On the basis of recovery rate of fertilizer nutrients by pepper plant and soil nutrients condition and their availability,it was suggested preliminarily that the fertilization plan of optimizing the structure of fertilization and increasing supply of organic and potassium fertilizers should be put forward to improve the yield and quality of pepper in this area.