摘要
通过设置蒜苗、甘蓝、豌豆、大豆、胡麻、小麦与玉米间套作,研究不同作物与玉米间作对玉米产量及生物量累积的影响。结果表明:除大豆/玉米间作模式外,其他模式土地当量比(LER)均大于1,表现出明显的间作产量优势,不同作物与玉米的共生期越短,其模式的LER越大;相对于单作玉米,与蒜苗、甘蓝、豌豆间作的玉米穗粒数和百粒重均显著提高;与大豆间作的玉米百粒重虽显著提高,但穗粒数提高不显著,与胡麻和小麦间作的玉米各产量构成因素均有提高,但不显著。玉米的生物量累积符合logistic增长模型,相比单作玉米,与蒜苗、甘蓝间作的玉米在播后66～86d后生物量累积高于单作,与大豆间作,共生期玉米生物积累量始终低于单作;与豌豆、小麦、胡麻间作,间作玉米的生物积累量转折点分别为玉米播后106、86、75d。
A field experiment was conducted to study the effects of different crops （garlic, cabbage, pea, soybean, linseed, and wheat） on yield and growth of intercropped maize. The results showed that the land equivalent ratio （LER） of every patterns was greater than 1 except for soybean/maize, advantage of intereropping was obvious, a phenomenon：the shorter the co - growth stage was, the larger LER was;compared with the maize monoculture, tlae grain amount and lO0-grain weight of maize intercropped with garlic,cabbage and pea was significantly increased; though lO0-grain weight of maize intercropped with soybean was significantly increased, but its grain amount was not significantly increased ; the yield factor of maize intercropped with linseed and wheat was also increased, but was not significant;the biomass accumulation of maize in every patterns was the logistic growth model, compared with the maize monocuhure, the biomass accumulation of intercropped maize was higher than monoculture from 66 to 86 days after maize sowing, in soybean/maize intercropping, the biomass accumulation of intercropped maize was always be- low in the co - growth stage, the turning point of biomass accumulation of intercropped maize appear in the 106th, 86th ,75th day after sowing in pea/maize,wheat/maize, and linseed/maize intercroppings
出处
《作物杂志》
CAS
CSCD
北大核心
2013年第4期120-125,共6页
Crops
基金
公益性行业科研专项"农作物最佳养分管理技术研究与应用"(201103003)
关键词
玉米
间套作模式
产量
生物量
土地当量比
Maize
Intercropping pattern
Yield
Biomass
Land equivalent ratio
作者简介
赵建华，助理研究员，主要从事问套作养分管理方面研究
孙建好为通信作者，副研究员，主要从事间套作养分管理与资源利用方面的研究
