摘要
对黄淮海平原农区宽带距多行带梨麦间作系统水分效应、产量效应与土地利用效应进行了研究。结果表明:小麦拔节—乳熟期间,间作系统内小麦日蒸腾耗水比单作麦田低21 6%;距梨树0 0～7 0m,为土壤水分的降低区,7 0～25 0m为土壤水分提高区,间作系统总体上使麦田0～200cm土壤贮水量提高11 81%;间作系统内小麦水分利用率比单作麦田约高8 7%;间作系统小麦单产量比单作麦田高6 6%,土地当量值可达1 19。就水分效应和土地利用效应而言,在黄淮海平原农区发展这种宽带距多行带梨麦间作模式具有一定的可行性。
The effects of Pear-Wheat inter-cropping with big spacing and several rows on water, yields and land utilization in the Huang-Huai-Hai Plain,were studied in this paper. The results indicated that the wheat transpiration in inter-cropping decreased by 21.6% compared to sole wheat field (CK_1).The soil water content in the range of 0.0～3.0 m away from the pear rows decreased but increased away from 6.0～25.0 m. In general, the soil water capacity of 0～200 cm depth and water utilization efficiency by wheat in the inter-cropping increased by 18.1% and 8.7% compared to CK_1 repectively. The wheat yields in inter-cropping increased by 6.6% compared to CK_1.The land equivalent ration(LER) was 1.19. So, it is feasible that this kind of inter-cropping will be developed in the Huang-Huai-Hai Plain as for the above-mentioned results.
出处
《林业科学研究》
CSCD
北大核心
2004年第2期167-171,共5页
Forest Research
基金
国家自然科学基金项目(39770624)
国家林业局森林培育重点实验室资助项目的部分研究内容
