杨-农复合模式对水稻产量和品质的影响

Effects of Poplar-crop Agroforestry Patterns on Rice Yield and Quality

针对目前林农复合经营中应用的宽窄行配置模式,研究其对水稻产量及其品质的影响。结果表明:杨稻间作前3年对稻穗生物量、产量、谷草比、蛋白质、直链淀粉含量的影响不显著,对千粒重、单穗重、穗长等指标有显著影响。间作5年将使得水稻的千粒重有所降低,蛋白质、直链淀粉含量则有所增加。不同配置模式对水稻产量的影响与杨树的树龄有很大的关系,为减少遮荫对树冠的影响,应当多采用宽行配置模式。

Effects of poplar-crop agroforestry patterns on rice yield and quality were analyzed. The results indicated that the poplar-crop agroforestry patterns had no significant effects on the rice ear biomass, yield, ratio of yield to biomass, protein content and amylose content within three years, while the patterns affected the 1 000 grains weight, one ear weight and ear length significantly. The 1 000 grains weight was reduced, but protein content and amylose content were improved, in the 5th year of poplar-crop management. The effects on yield among different patterns were related to the age of the poplar plantations, and the wider-narrow pattern should be applied in order to reduce the influence of tree＇s over-shading.