秸秆覆盖量对旱地微垄沟播春小麦生长发育特性及产量的影响  

Effects of Straw Mulch Amount on Growth and Development Characteristics and Yield of Spring Wheat Planted on Micro Ridge Furrow in Dry Land

作　　者：刘宏胜 高玉红 吴兵[2,4] 李映 牛俊义[2,3] 剡斌 LIU Hongsheng;GAO Yuhong;WU Bing;LI Ying;NIU Junyi;YAN Bing(WFP/AFAD Integrated Rural Development Project Office in Huining County,Huining Gansu 730799,China;Gansu Provincial Key Laboratory of Aridland Crop Science,Lanzhou Gansu 730070,China;College of Agronomy,Gansu Agricultural University,Lanzhou Gansu 730070,China;College of Life Sciences and Technology,Gansu Agricultural University,Lanzhou Gansu 730070,China)

机构地区：[1]会宁县WFP/IFAD农村综合发展项目办公室,甘肃会宁730799 [2]甘肃省干旱生境作物学重点实验室,甘肃兰州730070 [3]甘肃农业大学农学院,甘肃兰州730070 [4]甘肃农业大学生命科学技术学院,甘肃兰州730070

出　　处：《甘肃农业科技》2020年第11期67-72,共6页Gansu Agricultural Science and Technology

基　　金：甘肃省科技重大专项计划项目(1203NKDF018);甘肃省农业科技创新项目(GNCX-PZXY-2010-1);甘肃省高等学校科学研究成果转化培育项目(2017D-12)。

摘　　要：为了解秸秆不同覆盖量对旱地微垄沟播春小麦产量形成的调控效应,以常规小麦秸秆覆盖量10500 kg/hm2为对照,在会宁县旱川地研究了不同秸秆覆盖量对旱地微垄沟播春小麦的生长发育特性及其产量变化。结果表明,微垄上覆盖粉碎小麦秸秆量为3000 kg/hm2时有利于提高小麦苗期0~20 cm土层土壤温度。小麦生育进程随秸秆覆盖量的增加而逐渐缩短,微垄上覆盖粉碎小麦秸秆量为3000 kg/hm2时,处理小麦生育期较对照延迟5 d;保苗数和成穗数分别较其他处理显著增加30.90%~35.47%和13.49%~18.18%;籽粒折合产量最高,为3900.0 kg/hm2,较对照显著增产,增产率为9.22%。是会宁县旱川地微垄沟播春小麦比较适宜的秸秆覆盖量。In order to explore the regulatory effect of different straw mulches amount on the yield of spring wheat planted in micro ridge furrow in dry land,the field experiments were carried out.We studied the growth and development characteristics and grain yield change of spring wheat planted in micro ridge furrow in dry land by using conventional straw mulches as the control.The results showed that the wheat straw mulched with 3 000 kg/hm2 was beneficial to increase the soil temperature in the soil layer between 0 and 20 cm in the wheat seedling stage.The growth process of wheat was gradually shortened with the increase of straw mulch amount.The growth period of wheat under the treatment of straw covered with 3 000 kg/hm2 was 5 d later than that under the control.The seedling number per unit area and panicle number were 30.90%~35.47% and 13.49%~18.18%higher than other treatments.The highest grain yield was highest(3 900.0 kg/hm2),9.22% higher than that of the control.It was suitable straw mulch for spring wheat sowing in micro furrows in Huining County.

关 键 词：春小麦 秸秆覆盖量 微垄沟播 生长发育 产量 

分 类 号：S512.1[农业科学—作物学]