Chinese Journal of Applied Ecology ›› 1992, Vol. 3 ›› Issue (3): 240-246.
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Dong Zhenguo, Liu Ruiwen
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Abstract: Colony structural characteristics of crops on high-yield fields are analysed in this paper. For wheat with intensive farming, the maximum tillering number is 12×106/ha, maximum LAIis 5.5-6.0 and ear number is 4.5-5.25×106/ha, but for that with traditional farming, they are respectively 15-18×106/ha, 6.0-6.5 and 6.0-7.5×106/ha. The LADratio of vegetative to reproductive growth is 1:0.89 on high-yield field with intensive farming, and 1:0.73 with traditional one. The planted density of summer corn is mainly decided by its leaf inclination. The arreet type of corn has an inclination of larger than 65°, and its planting density is 7.5-8.25×104/ha. That of lanceolate type is less than 50°, whose planting density is 5.25-6.0×104/ha.
Key words: Leaf inclination, Leaf area day(LAD), Colony density, Colony structure
Dong Zhenguo, Liu Ruiwen . Colony structural characteristics of crops on high-yield fields in Huanghuaihai plain[J]. Chinese Journal of Applied Ecology, 1992, 3(3): 240-246.
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