| 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 |
| Key Words: completely mulched alternating narrow and wide ridges with furrow maize growth and development yield |
| Author Name | Affiliation | | FANG Yanjie | Agronomy Faculty, Gansu Agricultural University, Lanzhou 730070, China | | HUANG Gaobao | Agronomy Faculty, Gansu Agricultural University, Lanzhou 730070, China | | LI Lingling | Agronomy Faculty, Gansu Agricultural University, Lanzhou 730070, China | | WANG Jia | Agronomy Faculty, Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: |
| 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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