<正>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。

Taking the measure of many sampling plots’ collector which was periodical, accurate and fix-spotted,this paper deals with the annual variation feature of litter and nutrient restitution in three kinds of density stand from 14-year-old Pinus massoniana. The results showed that with the increasing of density, the annual amount of litterfall was 2 74S. 821～4 911. 179 kg/(hm2? a) respectively. The annual restitution amount of N,P,K,Ca and Mg in litter was 15.558～27.374 kg/(hm2? a), 1.437～2.900 kg/(hm2?a), 12.393～2,5. 365 kg/(hm2? a),10. 850～22. 056 kg/(hm2? a) and 2. 487～3. 278 kg/(hm2? a). The seasonal dynamics of forest litter and nutrient restitution was in the order of autumn,winter, summer,spring. Except for Mg, the bigger the density of plantation was, the more the amount of seasonal litterfall and nutrient restitution was.