【摘要】 在豫东潮土区壤质土壤上,研究了在施用磷肥的基础上,施用氮肥和钾肥对强筋小麦干物质积累量、小麦产量的影响。结果表明,增施氮肥和钾肥都可以提高小麦干物质积累量,尤其在拔节至抽穗期单株干物质积累速度最快;N用量为282.5kg.hm-2,K2O用量为270kg.hm-2时更有利于强筋小麦抽穗期对养分的需求;从产量上看,N 180~270 kg.hm-2,K2O 225~300 kg.hm-2为合适施肥量。更多还原

【Abstract】 The effects of combined application of different rates of nitrogen and potassium fertilizers on dry matter accumulation and gain yield of strong gluten wheat in loamy fluvo-aquic soil were studied.The results indicated that both nitrogen and potassium fertilizers increased the dry matter accumulation.Especially from jointing stage to earing stage,the dry matter accumulation rate was fastest.Application of N 282.5 kg·hm-2 and K2O 270 kg·hm-2 was more conducive to strong gluten wheat in this period of nutrient demand.To obtain the maximum yield,the suitable applying rate of N within 180～270 kg·hm-2 and K2O was 225～300 kg·hm-2.更多还原