【摘要】 通过田间区试,研究了有机肥与氮磷钾化肥配施对棉麦套作中小麦生物产量和经济产量的构成因素、养分含量及吸收量的影响。结果表明:有机肥与化肥配施能显著提高小麦的生物产量和经济产量,且以中肥最为适宜;增施氮磷钾肥能提高小麦各生育期养分含量和吸收积累量,并且还能增加旗叶的叶面积和叶绿素含量。就小麦对养分的吸收而言,小麦营养生殖并重时期(拔节至孕穗期),对养分的需求量大,此时应保证土壤中有足够的养分,可为小麦高产优质奠定营养基础,此期也是小麦平衡施肥的关键时期。更多还原

【Abstract】 A field test area,about the impact of organic manure and N、P、K fertilizers combined application to biological yield and the composition of economic output and nutrient content in wheat/cotton Intercropped.The result showed:Organic and inorganic fertilizers can significantly increasing wheat biological and economic yields and middling fertilizer is the most appropriate;Adding N、P、K fertilizer can increase absorbed accumulation and the nutrition in wheat growing period,and can increase the flag leaf area and the chlorophyll content.To the absorption of nutrition of wheat,in the period when nutrition growth and procreation growth are both important,wheat need more nutrition.At the time,soil should has enough nutrition,and it can establish nutrient foundation to the high yield of wheat,and the period is also the key time of wheat’s balance-fertilization.更多还原