欢迎访问林业科学,今天是

›› 1981, Vol. 17 ›› Issue (2): 155-162.

• 论文及研究报告 • 上一篇    下一篇

林网内小气候因子的分布与产量的关系

卫林 江爱良 宋兆民 陈建业   

  1. 中国科学院地理研究所;中国林业科学研究院林业科学研究所
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1981-05-25 发布日期:1981-05-25

THE CORRELATION OF CROP YIELD WITH MICROCLIMATIC FACTORS WITHIN A MESH (FIELD PROTECTED BY TREE SHELTERBELTS)

Wei Lin,Jiang Ai-liang,Song Zhao-min,Chen Jian-ye   

  1. Forest Research Institute, Chinese Academy of Forestry;Institute of Geography, Academica Sinica
  • Received:1900-01-01 Revised:1900-01-01 Online:1981-05-25 Published:1981-05-25

Abstract: As the relationship between the crop (wheat) yields and the microclimatic factors has been investigated, a multivariate regression equation of yield with these factors is established.The main points of analysis are as follows:(1) A reduction of 1m/s of wind speed at a given plot caused by the shelterbelts may increase the crop yield by 18.75gm/m2 (25 in/mu) and raise the average weight of a thousand grains by 0.74gm/1000grains at that plot.(2) A reduction of the saturation deficit of the air by 1 mb caused by the shelterbelts may increase the crop yield by 6.81gm/m2 (9.1jin/mu) and raise the average weight of a thousand grains by 0.17gm/1000 grains.(3) A reduction of 1% of solar radiation caused by the shadow of the shelterbelts may decrease the crop yield by 5.47gm/m2 (7.4jin/mu) and decrease the average weight of a thousand grains by 0.07gm/1000 grains.(4) An increase in moisture content of soil by 1% (wt w. r. t. dry soil) due to the reduction of evaporation caused by shelterbclts will increase the crop yield by 17.27gm/m2 (23 jin/mu) and the average weight of a thoundsnad grains by 0.42gin/1000 grains.