不同供水水平下间甲酚和间作对小麦、蚕豆耗水特性及产量的影响
Effect of 3-methyl phenol at different rates of irrigation and intercropping on water consumption, and yield of wheat and faba-bean
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摘要: 通过盆栽试验，研究了3个供水水平（田间持水量的45%、60%和75%）和间甲酚对小麦间作蚕豆耗水量及产量的影响。结果表明：间作总耗水量较相应单作总耗水量的加权平均低12.87%～31.56%，间甲酚对不同作物全生育期总耗水量的作用不显著，但供水和种植模式与作物总耗水量间的相关性极显著。间甲酚对小麦、蚕豆的产量均具有负效应，提高供水量可弱化间甲酚对小麦产量的负效应，但不同供水水平下间甲酚对蚕豆经济产量的化感作用差异不显著。间作生物产量和经济产量较相应单作的加权平均分别高15.3%～37.41%和5.98%～31.27%，间作同时具有弱化间甲酚对蚕豆化感负效应的作用。Abstract: A pot experiment was conducted to investigate the effect of 3-methyl phenol and the rate of irrigation on water consumption and yield of wheat and faba-bean in monocropping and intercropping systems. Irrigation was done to keep soil water contents to be 45%, 60% and 75% of field capacity at 3-methyl phenol concentration of 300 × 10-6mol·kg-1. Results show that the total water consumption of wheat and faba-bean under intercropping is 12.87% ～ 31.56% lower than that for wheat and faba-bean under monocropping. Allelopathic effect (AE) of 3-methyl phenol on water consumption of different crops is insignificant; but irrigation rate, and cropping pattern are significant correlated with total water consumption. 3-methyl phenol negatively affects yield of wheat and faba-bean, but that effect on wheat is weakened by enhanced irrigation rate, while 3-methyl phenol AE on faba-bean yield under different irrigation rates is not significantly different. Both biological and economic yield of intercropping systems increases by 15.3% ～ 37.41% and 5.98% ～31.27% respectively, in comparison with monocropped wheat and faba-bean yield. Intercropping as well weakens the negative effect of 3-methyl phenol AE on faba-bean yield.
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Keywords:
- Irrigation rate /
- 3-Methyl-phenol /
- Allelopathy /
- Intercropping /
- Monocropping /
- Water consumption /
- Wheat /
- Faba-bean
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