播种方式与追肥时期对寒地冬小麦根系生理活性及子粒品质的影响  

Effects of Planting mode and Fertilizing on Root Physiological Activity and Grain Quality of Winter Wheat in Cold Area

作　　者：李晶[1] 魏湜[1] 商文楠[1] 王晓楠[1] 陈龙涛[2] 付连双[1] 李卓夫[1] 李馨园[1] 

机构地区：[1]东北农业大学农学院,黑龙江哈尔滨150030 [2]吉林师范大学,吉林四平136000

出　　处：《作物杂志》2013年第4期100-103,159,共5页Crops

基　　金：黑龙江省教育厅项目:寒地不同栽培方式对冬小麦营养品质影响的生理机制研究(11551055)

摘　　要：为探寻黑龙江省冬小麦合理种植模式,利用田间大田试验,设置播种方式和追肥时期处理,探讨对冬小麦根系生理活性及子粒品质的影响。结果表明,拔节期追肥可显著提高生育后期根系活力、SOD活性、POD活性,延缓根系衰老。拔节期追施适量氮肥可促进子粒蛋白的转移、积累,显著提高子粒蛋白组分含量。追氮时期的后移有助于提高子粒沉降值及容重。沟播各生育时期根系活力、SOD活性、POD活性明显高于平播处理,沟播各追肥处理蛋白组分含量、沉降值、容重明显高于平播处理的。综合来看,黑龙江省冬小麦采取沟播种植模式,结合拔节期追施氮肥150kg/hm2,有助于生育后期根系活力维持及品质改善。In order to investigate optimal planting modes ot winter wneat,w~ uu.uu r mine the effects of root physiological activity and grain quality of winter wheat in different planting patterns and top- dressing dates. The results showed that top-dressing during the jointing stage increased significantly root activity, SOD activity,and POD activity at late growth stage and delayed the caducity of root. Top-dressing moderate nitrogen during the jointing stage would help grain protein transfer and accumulate and improve significantly grain protein constituent content. After shift of top-dressing nitrogen stage could help improve grain sedimentation value and vol- ume-weight. Trench sowing made the root activity, SOD activity, and POD activity larger and grain sedimentation value and volume-weight heavier than that of flat planting in different periods. In general, trench planting pattern combined with the nitrogen fertilizer application at jointing stage for 150kg/hm2 could contribute to the root activity at late growth stage of maintaining and improving the grain quality of winter wheat in Heilongjiang province.

关 键 词：冬小麦 播种方式 追肥时期 根系生 理活性 子粒品质 

分 类 号：S512.11[农业科学—作物学]