论文部分内容阅读
利用盆栽试验和田间生物试验,研究了控释N肥脲醛类肥料品种脲甲醛(UF)与速效N肥不同品种对辣椒生长、形态指标、产量及利用率的影响;并采用覆膜和露地2种大田栽培法探讨了不同控释肥用量对辣椒产量和品质的肥料效应。结果表明,辣椒对控释N肥中N的吸收利用率最高,达44 4%,较其它N肥品种提高17 46%～46 05%,其产量为CK的1 88倍。N肥品种的增产效应顺序为UF>CO(NH2)2>NH4NO3>NH4HCO3;UF处理,辣椒的果长、果宽、单果重及座果率等指标明显高于其它速效N肥品种。控释N肥用量试验表明,产量与用量密切相关,以600kg/hm2投入可取得较高的产量和经济效益,过量施用,效益显著下降。控释肥相同用量,覆膜栽培较露地栽培增产15 16%～16 45%;辣椒总糖、维生素C含量有随施用量增加而增加的趋势,但对干物质量及总酸度的影响较小。
Pot experiments and field experiments were conducted to study the effects of urea-formaldehyde (UF) and urea-N (N-fertilizers) on the growth, morphological characteristics, yield and utilization of pepper in controlled release N fertilizers. Kinds of field cultivation methods to explore the effect of different controlled release fertilizer on pepper yield and quality of the fertilizer effect. The results showed that the absorption and utilization rate of N in controlled release N fertilizer was the highest, reaching 44.4% and 17 46% ~ 46 05% higher than that of other N fertilizer varieties. The yield of N was 180% of CK. The order of increasing yield of N fertilizer was UF> CO (NH2) 2> NH4NO3> NH4HCO3. The index of fruit length, fruit width, fruit weight and fruit setting rate of UF was obviously higher than that of other available N fertilizer treatments. Controlled release N fertilizer dosage experiments showed that the yield and dosage are closely related to the 600kg / hm2 input can get higher yields and economic benefits, over-use, the benefits decreased significantly. The same amount of controlled release fertilizer, mulching cultivation than open field cultivation yield 15 16% ~ 16 45%; pepper total sugar, vitamin C content with the application rate increases, but the dry matter content and total acidity less affected.