| Response of microclimatic environment of corn canopy to narrow-wide row planting patterns at grain-filling stage |
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| DOI：10.7606/j.issn.1000-7601.2012.03.06 |
| Key Words: maize(zea mays. L) planting pattern narrow-wide row microclimatic environment |
| Author Name | Affiliation | | LIU Tiedong | Northeast lnstitute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jinlin 130012, China
Graduate University of Chinese Academy of Siences, Beijing 100049, China | | SONG Fengbin | Northeast lnstitute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jinlin 130012, China
Graduate University of Chinese Academy of Siences, Beijing 100049, China |
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| Abstract: |
| Under field condition, the effect of planting patterns on the microclimatic environment of corn canopy of two maize(Zea mays L.) cultivars (Beiyu 288 and Xianyu 335) were
examined in two planting patterns narrow-wide rows of(1)170 cm+30 cm(P1,6.4plants/m2);(2)90 cm+40 cm(P2, 6.4plants/m2), and uniform row of 65 cm(control,i.e.CK,6.4 plant/m2)was studied. The experirent results showed that, in three planting pattems, the
total light intereeption in P1 was the lowest, but more incoming PAR was deteeted in middle-low strata in P1. In the con-trary, the temperature of the canopy in Pl is higher than P2 and CK at every height strata while P2 was higher than CK. The relative humidity was depict as P12 in P1 was significantly lower than CK, while the value in P2 was the highest in three planting patterns at 50 cm strata, and at upper 50 cm strata, the concentration of CO2 was the lowest in P1, and the highest in CK. These results indicate that narrow-wide planting pattern improves the light environment of canopy, creates more uniform CO2, temperature, and moistures circumstance. |
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