| Effects of field configuration on ecological factors and photosynthetic parameters of cotton in apricot-cotton intercropping system |
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| DOI：10.7606/j.issn.1000-7601.2013.01.09 |
| Key Words: apricot-cotton intercropping field configuration ecological factors photosynthetic parameters |
| Author Name | Affiliation | | XU Wenxiu | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | LIU Yuna | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | XU Xinqiang | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | CHEN Feihu | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | ZHANG Yongqiang | Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| The experiment was conducted to find out the effects of field configuration on e
cological factors and photosynthetic parameters of cotton in the multiple system
of apricot-cotton intercropping. The results showed that the daily average tem
perature of cotton canopy varied within 24.49℃～35.19℃, and it could be ranked
as: C＞B＞A (A stood for 12 rows, 12 cm plant spacing, 1.15 m spacing between
apricot and cotton; B stood for 10 rows, 10 cm plant spacing, 1.45 m spacing bet
ween apricot and cotton; and C stood for 8 rows, 8 cm plant spacing, 1.85 m spac
ing between apricot and cotton). The humidity of cotton canopy could be ranked
as: C＞A＞B. Before initial flowering stage, A was the highest in soil temperat
ure at 20 cm depth and B was the next, while hereafter, there was no difference
among the treatments. Before the first irrigation, there were significant differ
ences of soil water content at 20 cm depth among the treatments, which could be
ranked as: B＞A＞C, but there was no remarkable difference at 40 cm depth; after
the first irrigation, there were significant differences at 40 cm depth among t
he treatments, which could be ranked as: B＞C＞A.
Pn in all growth period was ranked as C＞B＞A, which was positively correlated with the temperature of cotton
canopy, but not with SPAD. The lint yield of B was the largest, being 4.69% and 19.96% higher compared with that of A and C respectively. In spite of the shade of fruit trees, the temperature could be satisfied to the growth of cotton in the apricot-cotton intercropping system, therefore, humidity and soil water content were the important factors affecting the cotton production. |
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