【摘要】 为明了水肥互作效应对小麦产量的影响,以菏麦20为供试品种,采用裂区田间试验设计,研究不同水肥条件对菏麦20产量及其构成因素的影响。结果表明,浇两水增加每公顷穗数(下简称穗数)、提高千粒重;钾肥有明显降低穗数的趋势,磷肥则略有增加;磷肥更加有利于穗数和穗粒数的形成;水肥对菏麦20的生长发育及产量形成具有明显的互作效应。因此,应在施用氮磷肥的条件下浇好返青水+孕穗水。更多还原

【Abstract】 In order to explore the effects of interaction between water and fertilizer on wheat yield,the effects of different water and fertilizer conditions on yield and its components of Hemai 20 were studied by split plot field experiment design. The results showed that twice irrigation increased the number of spikes per hectare and thousand-grain weight. The spike number per unit was decreased significantly by potassium fertilizer application,but increased by phosphate application. The application of phosphorus fertilizer was more benefit to the increase of spike number and grain number per spike. Water and fertilizer had obvious interaction effects on growth and yield of Hemai 20,so the reviving water and booting water should be poured under the condition of nitrogen and phosphorus fertilizer application.更多还原