摘要
在大田条件下研究了小麦秸秆不同还田深度下小麦蔗糖含量及其有关酶活性,结果表明秸秆还田处理条件下,灌浆期间旗叶蔗糖含量及磷酸蔗糖还原酶(SPS)活性、籽粒蔗糖含量和酸性转化酶(AI)活性均高于普通耕作处理。在各不同深度秸秆还田处理中,15 cm深度秸秆处理在灌浆前期上述指标均有较高的表现,而花后21天左右则低于还田25 cm处理,灌浆后期下降幅度较大;而穗下节间蔗糖含量还田25 cm处理在花后7天左右超过其他处理,因而蔗糖滞留量较高。在秸秆还田25 cm处理条件下,小麦籽粒产量达到最高,其穗数也最多,而穗粒数与15 cm还田处理差异不显著,千粒质量也较低。
Effects of the depth of straw （maize） return on sucrose content and related enzymes of wheat were studied under field condition, and two different depths （15 cm and 25 cm） of straw return treatment were conducted in this research. The results showed that sucrose content and SPS activity of flag leaf, sucrose content and AI activity of grain were higher with straw （maize） return treatments compared with normal （non- straw） cultivation condition. And compared with the 25 cm depth of straw return treatment, the above mentioned indices of 15 cm depth treatment condition at early grain filling stage were higher, while dropped more sharply and lower at late grain filling. However, the sucrose content of the top segment of stem was the highest about 7 days after anthesis with 25 cm depth treatment. And 25 cm depth treatment had the highest grain yield by increasing the spike number per hectare.
出处
《中国农学通报》
CSCD
2014年第30期11-14,共4页
Chinese Agricultural Science Bulletin
基金
国家大学生创新计划"胶东半岛适宜玉米秸秆还田方式研究"(7611120)
山东省旱地作物水分高效利用高校创新团队建设资金(62112N5)
农业科技成果转化资金项目"旱地高产小麦新品种"青麦7号"示范推广"(2012GB2C620518)
关键词
秸秆还田深度
小麦
蔗糖
产量
depth of straw （maize） return
winter wheat
sucrose
grain yield
