| 方彦杰,黄高宝,李玲玲,汪佳.旱地全膜双垄沟播玉米生长发育动态及产量形成规律研究[J].干旱地区农业研究,2010,28(4):128~134 |
| 旱地全膜双垄沟播玉米生长发育动态及产量形成规律研究 |
| Yield and growth dynamics of rainfed maize in the system of completely mulched alternating narrow and wide ridges with furrow planting |
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| DOI：10.7606/j.issn.1000-7601.2010.04.24 |
| 中文关键词: 全膜双垄沟播 玉米 生长发育 产量 |
| 英文关键词:completely mulched alternating narrow and wide ridges with furrow maize growth and development yield |
| 基金项目:国家自然基金项目(40771132)；国家科技支撑计划课题(2006BAD15B06)；甘肃省教育厅项目0802-07 |
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| 中文摘要: |
| 通过田间试验研究了半干旱区旱地全膜双垄沟播栽培技术对玉米生长发育的影响。结果表明,全膜双垄沟播技术能够加快玉米生长发育进程,不同程度地增加了玉米株高、叶片数、叶面积指数(LAI)、光合势和单株干物质积累量等,且玉米生长发育阶段越是干旱,增加优势越明显,能明显减除玉米“卡脖旱”现象;全膜双垄沟处理较常规半膜平作处理增产26.76%,休闲期免耕覆盖处理比免耕立茬增产10.77%,比免耕增产19.75%;增产主要表现在生育后期(吐丝后)提高双穗率,即促进雌穗分化发育和提高结实率,及玉米后期粒重的增加。 |
| 英文摘要: |
| Effects of completely mulched alternating narrow and wide ridges with furow (T4) planting on maize growth and yield in semianid area was studied using field experiments. The results showed that the growth and develop-ment of maize was promoted, in some extent, plant height, leaf number, LAI, photosynthetic potential and dry matter accumulation were all improved by (T4), drier at the growth stages，more yield was produced with completely mulched
alternating narrow and wide ridges with furrow treatment. Compared with flat-planting without mulching, the maize yield
of completely mulched altemating nalrow and wide ridges with furow planting was increased by 26 . 76 % ; while the yield
of maize stalk covering and no-illage was increased by 10.77% and 19.75 %，compared with stubble standing with no-
tillage. The effects of completely mulched altermating narrow and wide ridges with furrow planting was more significant in
earlier growing stages (before heading) when the precipitation was relatively low, it could also alleviate the drought in
water critical period of maize; yield increasing in later growth stages (after silking) was mainly due to the promotion of
ear differentiation and development and the increases of seed-setting rate and its weight. |
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