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- Title
Comparison of growth and field microclimate characteristics of broomcorn millet under different fertilization conditions.
- Authors
ZHANG Pan-pan; ZHOU Yu; SONG Hui; QIAO Zhi-jun; WANG Hai-gang; ZHENG Dian-feng; FENG Bai-li
- Abstract
A field experiment with two broomcorn millet varieties Longmi 8 (strong drought-resistant variety) and Jinmi 4 (drought-sensitive variety) was conducted to compare their differences in growth, field microclimate and photosynthetic capacity from anthesis to maturity under different fertility conditions. The results showed that, fertilization decreased canopy temperature, air temperature, soil temperature, illumination, but improved the relative humidity among broomcorn millet plants compared with the non-fertilization treatment. With an increase of the fertilizer level, the plant height, SPAD, LAI, netphotosynthetic rate, transpiration rate, stomatalconductance, inter- cellular CO2 concentration in broomcorn millet showed an increasing trend, which of the high fertilization treatment were 9.2%, 15.1%, 56.6%, 17.8%, 24.6%, 14.2%, 29.7% higher than those of non-fertilization treatment, respectively. Compared with Jinmi 4, Longmi 8 showed a cold wet characteristic, with lower canopy temperature, air temperature, soil temperature, illumination, and higher plant height, LAI, SPAD and relative humidity during grain filling. Moreover, each photosynthetic index of Longmi8 slowly decreased and extended the period of leaf photosynthetic function so as to accumulate more photosynthetic products.
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2015, Vol 26, Issue 2, p473
- ISSN
1001-9332
- Publication type
Article