玉米绿豆间作效应分析

为了筛选出适宜黑龙江省西部半干旱地区的玉米与绿豆的间作模式,通过田间试验,研究了绿豆、玉米间作对玉米产量、绿豆产量及其主要农艺性状的影响。结果表明:与绿豆和玉米分别单作相比,绿豆、玉米间作模式具有较大的生产潜力和明显的经济效益优势,当绿豆与玉米的间作比例为2∶1时,其复合群体的总经济效益最高;绿豆与玉米间作模式的边际效应使玉米的一些农艺性状得到改善,而绿豆的一些性状得到减弱,这是受到负边际效应影响的结果。

Effects of Intercropping for Maize and Mung Bean

In order to screen out intercropping pattern of mung bean and maize ,which was suitable for west semi-arid region of Heilongjiang province ,the effects of intercropping for maize and mung bean on yield and ag-ronomic characters were investigated by field experiments .The results showed that compared with monocul-ture ,intercropping pattern had yield-increasing potential and economic benefit advantage ,the economic benefit was the highest when the intercropping ratio of mung bean and maize was 2∶1 .In the mode of intercropping for maize and mung bean ,some agronomic characters of maize were improved by marginal utility ,and some agro-nomic characters of mung dean were weaken by anti-marginal utility .