论文部分内容阅读
本文以友谊农场为研究区,基于RS与GIS技术开展2009-2011年大豆、玉米的重迎茬监测研究,旨在完善作物重迎茬监测方法,掌握研究区大豆与玉米的重迎茬状况,为黑龙江省垦区作物种植结构调整提供客观依据。结果显示:友谊农场近三年玉米种植面积快速增加,大豆种植面积逐年减少,大豆与玉米总种植面积占旱作作物种植面积的比例稳定在88%左右;大豆重茬率由2010年的49.28%攀升至2011年的51.75%,玉米重茬率由2010年的43.29%增长到2011年的46.58%;2011年,大豆迎茬率为41.88%,玉米迎茬率达27.81%;友谊农场大豆、玉米重迎茬具有显著的区域差异,其东北部大豆与玉米的种植面积少、重迎茬率低,西南部大豆与玉米的种植面积广、重迎茬率高,中部大豆与玉米的种植面积逐渐减少,重迎茬率变化较快;友谊县地貌态势、国家农业发展政策及外部农业市场环境是造成大豆与玉米种植重迎茬时空格局的重要原因。
In this paper, Friendship Farm as a research area, based on RS and GIS technology to carry out 2009-2011 year soybean and corn replanting monitoring research aimed at improving the monitoring of crop replanting, grasping the study area of soybean and corn replanting status, Provide an objective basis for crop planting structure adjustment in Heilongjiang Reclamation Area. The results showed that the area of corn planting in Friendship Farm increased rapidly in recent three years, the area of soybean planting decreased year by year, the proportion of total planting area of soybean and corn in dry planting area stabilized at about 88%, and the rate of stubble continued to rise from 49.28% in 2010 To 51.75% in 2011, the rate of stubble continued to increase from 43.29% in 2010 to 46.58% in 2011; in 2011, the rate of stubble for soybean was 41.88% and that for corn was 27.81%; for friendship farm, The stubble has significant regional differences. The planting area of soybean and corn in the northeast is small, the rate of replanting and stubble is low, the planting area of soybean and corn in the southwestern region is wide, the rate of replanting and stubble is high, the planting area of soybean and corn in the middle part is gradually reduced, The rate of re-emergence and change of stubble rate is relatively fast. The topography of Youyi County, the state agricultural development policy and the external agricultural market environment are the important reasons for the spatiotemporal pattern of heavy stubble cropping of soybean and corn.