麦秸还田与化肥配施对夏玉米产量和植株性状的影响

Effects of Combining Application of Wheat Straw with Fertilization on Yield and Plant Characteristics of Summer Maize

以郑单958为材料,通过2年大田定位试验研究了麦秸粉碎覆盖还田与化肥配施对夏玉米产量和植株性状的影响。结果表明:与传统的麦秸不还田和单施化肥处理相比,麦秸覆盖还田不施化肥处理两年分别减产7.07%和28.41%,麦秸与化肥配施处理两年分别增产12.31%和9.51%。麦秸与化肥配施可以提高穗长、穗粗、穗粒数和千粒重等穗部性状,同时提高夏玉米植株的双穗率,降低空秆率,显著提高群体结实穗数。

Two years of field experiments from 2008 to 2009 were conducted to investigate the effects of wheat straw and fertilization combined application on yield components and plant characters of summer maize cultivar Zhengdan958. The results showed that compared with fertilization treatment without straw returning, the yield of no fertilization with straw returning decreased by 7.07% and 28.41% in two growth seasons, respecitily. While the yield of fertilization with straw returning increased by 12.31% and 9.51% in two growth seasons, respeeifily. The treatment of fertilization with straw returning could enhance ear characteristics such as ear length, ear diameter, ear grain number, 1000-grain weight, etc. Meanwhile, treatment of fertilization with straw returning could improve double ear rate and decrease bare plant rate, thus significantly increase population fertile ears.