甘蔗-甜玉米间作对甘蔗产量、品质及经济效益的影响

生态学杂志

甘蔗-甜玉米间作对甘蔗产量、品质及经济效益的影响

李志贤^1,2,杨文亭^1,3,王建武^1**

（¹ 华南农业大学农学院，广州 510642； ² 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室，湖南湘潭 411201； ³ 江西农业大学农学院，南昌 330045）

出版日期:2014-01-10 发布日期:2014-01-10

Effect of sugarcane-sweet corn intercropping on yield, quality and economic benefit of sugarcane.

LI Zhi-xian^1,2, YANG Wen-ting^1,3, WANG Jian-wu^1**

(¹College of Agriculture, South China Agricultural University, Guangzhou 510642, China; ² Hunan Province Key Laboratory of Coal Resources Cleanutilization and Mine Environment Protection, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China; ³ College of Agriculture, Jiangxi Agricultural University, Nanchang 330045, China)

Online:2014-01-10 Published:2014-01-10

摘要/Abstract

摘要： 通过甘蔗田间定位试验研究了种植模式（甘蔗单作、甘蔗-甜玉米间作（1∶1、2∶1）和施氮水平（300、525 kg·hm^-2）对甘蔗群体经济效益、甘蔗产量、生物量积累动态变化及品质的影响。结果表明：低氮水平（300 kg·hm^-2）下，甘蔗甜玉米间作（1∶1、2∶1）的经济效益分别高于单作甘蔗52.67%和20.59%，土地当量比（LER）均大于1，且甘蔗-甜玉米1∶1间作模式的LER高于甘蔗甜玉米2∶1间作31.50%；高氮水平（525 kg·hm^-2）下，甘蔗甜玉米1∶1间作的经济效益和土地利用率分别高于单作26.25%和36.00%，而甘蔗-甜玉米2∶1间作与甘蔗单作相比无间作优势；甘蔗甜玉米间作中，因间作甘蔗最大生长速率（v_m）减小，理论最大值（w_m）、最快生长日（t_m）等生物量动态累积特征参数的协调性劣于单作甘蔗，使间作甘蔗产量低于单作甘蔗9.72%～33.17%，而间作甜玉米产量比单作甜玉米高14.10%～24.43%；相比甘蔗单作，甘蔗-甜玉米间作对甘蔗品质无显著影响；甘蔗-甜玉米间作是实现甘蔗优质、高效种植的可行途径，其中甘蔗-甜玉米1∶1间作模式更为优化。

关键词: 面向对象, 决策树, 森林调查参数, SPOT5, 地上碳储量

Abstract: A field experiment was conducted in the Experiment Station Farm of South China Agricultural University located in Guangzhou China to investigate the effect of sugarcane planting patterns (sugarcane monoculture, sugarcane-sweet corn 1∶1 intercropping, and sugarcanesweet corn 2∶1 intercropping) and different N input levels (300, 525 kg·hm^-2) on yield, total biomass dynamic, quality and economic benefit of sugarcane. Results showed that the economic benefit of sugarcanesweet corn intercropping with the low N level was 52.67% to 20.59% (sugarcane-sweet corn 1∶1 to 2∶1 intercropping) higher than that of sugarcane monoculture, and the land equivalent ratio (LER) of which was higher than 1. The LER of sugarcane-sweet corn 1∶1 intercropping system was 31.5% higher than that of sugarcane-sweet corn 2∶1 intercropping system. Meanwhile, the economic benefit and the LER of sugarcane-sweet corn 1∶1 intercropping system with the high N level were 26.25% and 36.00% higher than that of sugarcane monoculture respectively, but the sugarcane-sweet corn 2∶1 intercropping system with the high N level had no advantages compared with the sugarcane monoculture. In the sugarcanesweet corn intercropping system, the yield of intercropped sugarcane was 9.72%-33.17% lower than that of monoculture because the eigenvectors such as maximum growth rate (v_m), theoretical maximum (w_m) and the fastest growth day (t_m) of the dynamic accumulation model of intercropped sugarcane were more uncoordinated than those of monoculture. However, the yield of intercropped sweet corn was 14.10%-24.43% higher than that of monoculture. Compared with sugarcane monoculture, sugarcane-sweet corn intercropping patterns had no significant effect on sugarcane quality. Therefore, it is feasible to apply sugarcane-sweet corn intercropping to realize high quality and high efficiency planting of sugarcane, and the sugarcane-sweet corn 1∶1 intercropping is the optimum intercropping pattern.

Key words: SPOT5., object-based method, forest inventory parameter, decision tree, aboveground carbon storage

李志贤1,2,杨文亭1,3,王建武1**. 甘蔗-甜玉米间作对甘蔗产量、品质及经济效益的影响[J]. 生态学杂志.

LI Zhi-xian1,2, YANG Wen-ting1,3, WANG Jian-wu1**. Effect of sugarcane-sweet corn intercropping on yield, quality and economic benefit of sugarcane.[J]. cje.

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