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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (13): 196-204.doi: 10.11924/j.issn.1000-6850.casb14110134

所属专题： 耕地保护

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

陕西关中耕地粮食生产潜力研究

石玉琼1,李团胜2   

  1. (1山西农业大学林学院,山西太谷 030800,2长安大学地球科学与资源学院,西安 710054）
  • 收稿日期:2014-11-20 修回日期:2015-04-01 接受日期:2014-12-12 出版日期:2015-06-02 发布日期:2015-06-02
  • 通讯作者: 石玉琼
  • 基金资助:
    国家自然科学基金“榆林地区景观生态风险时空特征研究”(1140042)；陕西省自然科学基础研究计划项目“基于雨洪过程安全的渭河下游为渭南段生态用地规划研究”(2009JM5004)；陕西省软科学计划项目“陕北能源化工基地生态风险分析与评价”(2007RK21)；山西农业大学科技创新基金“基于景观生态安全格局的太原市生态用地规划”(2014008)。

Farmland Grain Potential Productivity of Guanzhong, Shaanxi Province

Shi Yuqiong1, Li Tuansheng2   

  1. (1College of Forestry, Shanxi Agricultural University, Taigu Shanxi 030800;2College of Earth Science and Resources, Chang’an University, Xi’an 710054)
  • Received:2014-11-20 Revised:2015-04-01 Accepted:2014-12-12 Online:2015-06-02 Published:2015-06-02

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摘要： 通过对陕西关中耕地粮食生产潜力的科学估算，为国家或区域合理制定粮食增产及粮食安全措施提供依据。基于农用地分等成果，计算了陕西关中耕地生产潜力、耕地利用强度与耕地增产潜力，分析了其空间差异形成的原因。结果表明，关中耕地自然生产潜力为30.09 t/hm2，利用生产潜力为18.74 t/hm2，可实现生产潜力为9.57 t/hm2，实际单产为7.34 t/hm2，理论利用强度为0.623，可实现利用强度为0.511，实际利用强度为0.767。理论增产潜力为11.35 t/hm2，可实现增产潜力为9.17 t/hm2，实际增产潜力为2.23 t/hm2。区域内存在明显的空间差异，渭河平原区的耕地自然生产潜力、利用生产潜力、可实现生产潜力以及实际单产都大于秦岭山区以及渭北旱塬区；理论利用强度总体相差不大，咸阳地区总体较高。可实现利用强度相差较大，铜川地区总体较高，西安地区总体较小。关中地区大部分县（区）实际利用强度较大，西安地区最大，渭滨、金台、武功、大荔等16个县（区）实际利用强度有待提高的空间比较大；理论增产潜力、可实现增产潜力以及实际增产潜力都以渭河平原各县（区）较大。未来关中地区粮食增产潜力主要在渭河平原各县（区）。

关键词: 种公鸡, 种公鸡, 鸡精液冷冻, 冷冻保护剂, 冷冻速率

Abstract: Scientific calculation of grain potential productivity for country or area can provide the theory basis for reasonable formulation of approaches to ensure increase in grain production and food safety. Using the results of agriculture classification, the farmland grain potential productivity, farmland use intensity and the increase potential for future in Guanzhong were calculated. The result showed as follows: for the total of Guanzhong Area, natural potential productivity, utilization potential productivity, achievable potential productivity and real per unit area yield were 30.09 t/hm2, 18.74 t/hm2, 9.57 t/hm2 and 7.34 t/hm2, respectively. Theoretical use intensity, achievable use intensity and real use intensity were respectively 0.623, 0.511 and 0.767. Theoretical increase potential productivity, achievable increase potential productivity and real increase potential productivity were 11.35 t/hm2, 9.17 t/hm2 and 2.23 t/hm2, respectively. The difference among counties was great. Natural potential productivity, utilization potential productivity, achievable potential productivity and real per unit area yield in Weihe River Plain were more than those in Weibei Upland and Qinling Mountains. The theoretical use intensity didn’t appear to be much different all over the Guanzhong, and that of Xianyang Region was generally higher. But the achievable use intensity appeared to be much different, and that of Tongchuan Region was generally higher, and that of Xi’an Region was generally lower. The actual utilization intensity of most counties of Guanzhong was high, and that of Xi’an Region was the maximum. There was great room for improvement of actual utilization intensity in 16 counties such as Weibin, Jintai, Wugong, Dali, etc. Theoretical increase potential productivity, achievable increase potential productivity and real increase potential productivity were great in counties of Weihe River Plain. In the future, the increase potential was mainly in the counties of Weihe River Plain.