Analysis of Crop Potential Productivity on Highland of Loess Plateau

WANG Zong ming; LIANG Yin li

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Analysis of Crop Potential Productivity on Highland of Loess Plateau

- Analysis of Crop Potential Productivity on Highland of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 21, Issue 1, Pages: 30-33(2002)
- 作者机构：
  
  1. 中国科学院教育部水土保持与生态环境研究中心, 陕西杨凌,712100
  2. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
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- Published：2002
- 稿件说明：
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WANG Zong ming, LIANG Yin li. Analysis of Crop Potential Productivity on Highland of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2002, 21(1): 30-33.
DOI：

WANG Zong ming, LIANG Yin li. Analysis of Crop Potential Productivity on Highland of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2002, 21(1): 30-33. DOI：

摘要

研究一个地区的作物生产潜力可以发现提高产量的主要障碍因子，为合理进行农业生产规划提供依据。以长武试区冬小麦和春玉米为例，计算了黄土塬区光温潜力、气候潜力，并与实际产量进行比较。结果表明，该区光温潜力多年平均值冬小麦为6910.5 kg/hm

，春玉米为10718.6 kg/hm

，年际变化不大；气候生产潜力多年平均值冬小麦为6190.3 kg/hm

，春玉米为8768.7 kg/hm

，年际波动较大。1986-1990年，试区作物产量潜势实现率较低。1990-1994年，小麦和玉米大田产量已经接近当地的气候生产潜力。今后的农业生产中应注意稳定化肥用量，使N，P比更加合理，并大力推广地膜及秸杆覆盖技术，增施有机肥，加强田间管理等。

Abstract

To research the crop potential productivity can find the obstacle to improve yield

and can offer grounds for programming agricultural production. The temperature and climate potential productivity of Changwu experimental district in many years are compared with practical yield of winter wheat and spring maize. The results show that the wheat average heat potential productivity of the district in many years is 6910.5 kg/hm2

that of maize 10718.6 kg/hm2

the variance between years is not big. The wheat average climate potential productivity is 6190.3 kg/hm2

that of maize is 8768.7 kg/hm2; variance between years very large in 1986-1990

the realizing rate is comparative low

but in 1990-1994

the rate is very high

almost equal to the climate potential productivity of the district. The items that are important in the future are: to stable chemical fertilizer application and rational proportion between N and P; to universe use of film mulches and stubble mulches; to increase the mount of organic fertilizer and the efficiency of field managements.

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references

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