论文部分内容阅读
适宜的根层磷养分供应是菜田磷肥推荐用量的基础。通过在开展多点磷肥施用试验,分析不同施肥措施对辣椒产量和磷肥农学利用率的影响。结果表明,除试验点2、试验点4和试验点8外处理间辣椒产量存在显著差异外,其他各试验点处理间辣椒产量差异不显著。与T1辣椒产量相比,T2、T3和T4辣椒产量都有所提高,但各处理间辣椒产量差异都不显著。各试验点各处理磷肥利用率由大到小依次为:处理2>处理3>处理4。因此,在土壤有效磷中等偏高磷水平条件下,设施辣椒菜田在施用有机肥的基础上不需要追施磷肥。
Appropriate root supply of phosphorus nutrients is the basis for the recommended amount of phosphate fertilizer in vegetable fields. Through carrying out multi-point phosphate fertilizer application experiment, the effects of different fertilization measures on pepper yield and agronomic efficiency of phosphate fertilizer were analyzed. The results showed that there was a significant difference in the yield of pepper between the treatment points 2, 4 and 8, and no significant difference was found in the yield of pepper among the other treatments. Compared with the yield of T1 pepper, the yield of pepper in T2, T3 and T4 increased, but the yield of pepper in each treatment was not significant. The utilization rate of phosphate fertilizer in each treatment point descending order was: Treatment 2> Treatment 3> Treatment 4. Therefore, under the condition of medium high phosphorus content in soil available phosphorus, no topdressing phosphate fertilizer was needed on the basis of applying organic fertilizer in the facilities.