摘要
为了充分利用红壤地区的光、温、水资源,提高土地利用率,增产增收,通过田间大区比较试验,对红壤低丘旱耕地宽窄带间作模式综合效应进行了研究,结果表明:主副作物宽窄带间作与传统单作比较,综合效应得到明显的提高,年径流深、年泥沙流失量分别减少69.4%、81.8%,耕作层有机质、全氮、速效磷、速效钾含量分别提高7.1%、9.1%、13.6%、8.1%,主作物玉米株高均值为3.03 m,极显著低于对照;穗行粒数为41.5粒/行,极显著高于对照;穗长、百粒重显著高,玉米季增产75.45 kg/hm2,增产1.7%,与对照差异不显著,各处理分别收获饲料10087.5 kg/hm2、黄豆1270.5 kg/hm2、薯块7668.0kg/hm2;产投比由1.66提高到2.04。
In order to sufficiently utilize the sunlight, temperature and water resources in red-soil region, improve land use ef- ficiency, and finally increase both crop yield and income, we studied the comprehensive effects of wide-narrow-band intercropping model of crop in hilly red-soil dryland by a comparative test in field. The results showed that the wide-narrow-band intercropping of main crop and subsidiary crop obtained significantly higher comprehensive effects than the traditional monoculture （the control, CK）, for example： the annual runoff depth and annual soil erosion were decreased by 69.4% and 81.8%, respectively; the content of organic matter, total nitrogen, available phosphorus and available potassium in plough layer were increased by 7.1%, 9.1%, 13.6% and 8.1%, respectively; the average plant height of main crop （maize） was 3.03 m, which was extremely lower that of CK; the kernel number per row was 41.5, which was extremely higher than that of CK; the ear length and 100-grain weight were signifi- cantly higher; the seasonal yield of maize was increased by 75.45 kg/hm2 or 1.7%, which were not significantly different from those of CK; the yields of fodder, soybean and potato tuber were 10087.5, 1270.5 and 7668.0 kg,/hm2, respectively, and the input-out- put ratio was enhanced from 1.66 to 2.04.
出处
《江西农业学报》
CAS
2015年第12期11-14,共4页
Acta Agriculturae Jiangxi
关键词
红壤低丘
旱耕地
宽窄带
间作模式
综合效应
Red-soil hill
Dryland
Narrowband and wideband
Intereropping model
Comprehensive effects
