[1]HUANG Yi,ZHANG Yu-long,ZOU Hong-tao,et al.The Rain-resource Characteristics and Dryland Soil Moisture Control in Northernwest Liaoning Province[J].Research of Soil and Water Conservation,2009,16(04):113-116.
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The Rain-resource Characteristics and Dryland Soil Moisture Control in Northernwest Liaoning Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 04
Page number:
113-116
Column:
Public date:
2009-08-20
- Title:
- The Rain-resource Characteristics and Dryland Soil Moisture Control in Northernwest Liaoning Province
- CLC:
- S152.7
- DOI:
- -
- Abstract:
- The rainfall and evaporation analysis result for 48 years in northernwest of Liaoning showed that the fastigium difference between rainfall and evaporation is one of the important reasons of drought occurring in spring. The drought degree can be scaled by means of using humidity coefficient (0.33). In this region the humidity coefficient is under 0.33 during winter and spring, But the humidity coefficient is close to 0.33 after harvest. The control measures with covering the plastic film and remaining stubble after harvest can store the rainwater in soil in autumn. The practice with covering film before spring also can be adopted. These measures can hold the rainfall in the soil and provide enough moisture for seeding in follwing spring. In the case of encountering severe drought, the soil moisture with covering the plastic film in autumn increased 3 percent compared to covering plastic film in spring and control. The dry mass of seeds different between covering practices is notable.
- References:
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[2] 中国科学院自然区划工作委员会.中国气候区划[M].北京:科学出版社,1959.
[3] 潘军宁 关于适线法中经验频率公式的讨论[J].海洋工程,1996(3):65-76.
[4] 张玉龙,邹洪涛.辽西半干旱地区春播前土壤墒情变化的研究[J].水土保持学报,2005,18(6):179-182.
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Last Update:
1900-01-01