不同水肥处理对春小麦产量、品质和土壤硝态氮含量的影响

以强筋春小麦品种宁春4号为供试材料,采用裂区试验设计,研究了传统灌溉和节水灌溉条件下,有机肥处理、增氮处理和减氮处理对春小麦产量、品质及土壤硝态氮含量的影响。结果表明:(1)无论在传统灌溉条件下和节水灌溉条件下,与有机肥处理相比,增氮处理和减氮处理不仅能提高籽粒产量,而且能提高小麦的品质;(2)在传统灌溉条件下,与增氮处理相比,减氮处理能使籽粒产量提高2.9%,使沉降值提高3.6 mL,且降低了0~180 cm土层的NO3--N含量;(3)在节水灌溉条件下,与增氮处理相比,减氮处理的沉降值提高3.3 mL,且降低了0~30 cm土层的NO3--N含量。

Effect of different water and fertilizer treatments on the quality, yield of spring wheat and NO3--N content in soil

The research used Ningchun No.4,one type of spring-wheat,as the experiment material,and applied split district design to study the influence of treatments of applying organic fertilizer,increasing the amount of nitrogen and decreasing the amount of nitrogen on the yield,quality of spring-wheat,and the content of nitrate nitrogen in soils under the conditions of traditional irrigation and water-saving irrigation.The results show that:(1) under both types of irrigation,compared with the treatment of applying organic fertilizer,the treatments of increasing and decreasing nitrogen could not only increase the yield of wheat but also improve the quality of the wheat;(2) under the traditional irrigation condition,compared with the treatment of nitrogen-increase,the decreasing nitrogen treatment could increase the wheat yield by 2.9%,increase the sedimentation value by 3.6 mL,and decrease the content of nitrate nitrogen in 0-180 cm soil layer;(3) under the water-saving irrigation,compared with the treatment of increasing nitrogen,the treatment of decreasing nitrogen could increase the sedimentation value by 3.3 mL,and also decrease the content of nitrate nitrogen in 0-30 cm soil layer.