桐麦间作系统中小麦生物量的研究

该文对桐麦间作系统中小麦各部分生物量进行了研究，结果表明系统内外小麦种子生物量差异显著，系统外的小麦生物量高于系统内；同一间作模式内生物量分布受距树行远近影响，处于模式中央的小麦各部分生物量都是最大的；影响小麦生物量的主要因子为小麦品种和穗密度，间作模式和距树行远近对小麦种子生物量有一定影响，但对小麦总生物量影响较小．桐麦间作系统内外小麦种子单穗生物量的差异较总生物量的差异小；影响小麦种子单穗生物量的主要因子为小麦品种，其次为距树行远近，而间作模式和小麦穗密度对其影响甚小；不同小麦品种对环境条件要求不一致，在桐麦间作系统麦田东边，豫西８３２各部分生物量都有比西边减小的趋势，秸秆生物量平均减少５％；矮早各部分的生物量都有比西边增大的趋势，秸秆生物量平均增大６．５％，小麦种子生物量平均增大３．５％．

Wheat Biomass in the Inter Cropping System of Paulownia Wheat

This paper studies the biomass of different components of wheat crops in the inter cropping system, and the results show that the difference in the biomass of the wheat crops outside the inter cropping system is significantly greater than that inside the system. The influences of Paulownia trees on the biomass of wheat crops vary with the distance of the wheat crops from the tree belt, and biomass of the wheat crop near the middle of the tree belts are greater than that below the tree crowns. The main influence factors on the biomass of wheat crops are wheat species and the density of ears. The inter cropping model and the distance of the wheat crops from the tree belt have some influence on the biomass of wheat seeds, but not on the biomass of wheat crops. The difference in the amount of grains per ear between the wheat crops inside and outside the system is smaller than the difference in the total biomass of the two wheat crops. Wheat species is the first influence factor on the amount of grains per ear and the distance of the wheat crops from the tree belt is second, but the inter cropping model and the density of ears are not one. Different wheat cultivars require different growth conditions, the biomass of wheat crop (cv.‘Yuxi 832’) below the crowns of the eastern tree belt inside the inter cropping system tends to be less than that below the crowns of the western tree belt, on average the amount of stem biomass was 5% less; the amount of biomass of different components of wheat (cv ‘Aizao’) crop at the east inside the inter cropping system tends to be greater, the stem biomass was 6.5% greater and the crop yield was 3.5% greater than that at the west.