| Different conservation tillage related with soil water soil temperature and yield of potato in rainfed farming system |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2009.01.20 |
| Key Words: potato conservation tillage surface seeding no-tillage with stubble retention loess plateau |
| Author Name | Affiliation | | ZHAO Tianwu | College of Agronomy Gansu Agricultural University,Lanzhou,Gansu 730070,China | | HUANG Gaobao | College of Agronomy Gansu Agricultural University,Lanzhou,Gansu 730070,China | | XUAN Chunxiang | College of Agronomy Gansu Agricultural University,Lanzhou,Gansu 730070,China | | XIE Junhong | College of Agronomy Gansu Agricultural University,Lanzhou,Gansu 730070,China | | LIAN Hongbin | College of Agronomy Gansu Agricultural University,Lanzhou,Gansu 730070,China |
|
| Hits: 1524 |
| Download times: 205 |
| Abstract: |
| A field test was conducted in the western Loess Plateau, and the treatments including conventional tillage (T) , surface seeding in the stubble mulched ditch with plastic film mulched ridge (PDSS) , shallow seeding in the stubble mulched ditch with plastic film mulched ridge (PDSSH) , surface seeding on ridge with stubble (RSS) , surface seeding in flatten culture with stubble (FSS) and surface seeding in the stubble mulched ditch without plastic film mulched ridge (DSS) .Through analysis of soil water, soil temperature in different layers and yield of potato, the results showed that no-tillage with stubble retention could increase water storage in 0～80 cm soil layer, especially in 0～30 cm soil layer in poor raining years;No-tillage with stubble retention could decrease accumulated soil temperature (≥0℃) as compared with conventional tillage, and also decreased the daily temperature of the layer of potato development at 14∶00 in sunny days.The temperature of FSS was 27℃～29℃, PDSSH was 21℃～28.5℃, and they were lower than T.The temperature of T was 27℃～32℃, therefore, it reduced the harm to potato development.The rate of seedling and yield of no-tillage treatment was higher than T, except RSS.The yield of FSS was the best, reaching 27 468.3 kg/hm2 and increasing by 30.05% compared with T. |
|
|
|