Effect of clipping at seedling stage on growth and yield of spring wheat

Abstract

Abstract: The compensation for spring wheat (Triticum aestivum) under simulated herbivory stress by clipping was examined in a semi-arid region of Gansu province in1996. The results showed that clipping at seedling stage reduced spring wheat growth under two irrigation conditions. The yield of spring wheat generally under-compensated the clipping effect. Heavy clipping (cutting all leaves above the ground, T0, T₁) resulted in a more serious reduction in yield, compared with light clipping cutting half of the leaves, H0, H₁). The yields of all treatments were lower than controls(CK₀,CK₁),i.e., CK₀>H0>T0>CK₁ >H₁ >T₁. Irrigation for once right after clipping increased wheat growth and its compensatory ability, although they were still under-compensation.

Key words: Spring wheat, Under-compensation, Seedling stage, Clipping, Irrigation, Liaoning Province, CO₂, energy saving and carbon emission reduction efficiency, undesirable output DEA model

CLC Number:

Q945

YUAN Baozhong, WANG Jing, ZHANG Rong, ZHAO Songling, SUN Jie . Effect of clipping at seedling stage on growth and yield of spring wheat[J]. Chinese Journal of Applied Ecology, 2002, (4): 413-416.

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