| Effects of different fertilization on winter rapeseed yield and soil water in dry land |
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| DOI：10.7606/j.issn.1000-7601.2017.05.24 |
| Key Words: fertilization dry-land rapeseed yield soil water water use efficiency |
| Author Name | Affiliation | | LUO Zhao-xia | Institute of Agricultural Sciences, Tianshui, Gansu 741000, China | | YANG Zhi-qi | Institute of Agricultural Sciences, Tianshui, Gansu 741000, China | | E Sheng-zhe | Institute of Soil Fertilizer and Water Saving Agriculture, Gansu Acadamy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | YUAN Jin-hua | Institute of Soil Fertilizer and Water Saving Agriculture, Gansu Acadamy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | CHE Zong-xian | Institute of Soil Fertilizer and Water Saving Agriculture, Gansu Acadamy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | GUO Yong-jie | Institute of Soil Fertilizer and Water Saving Agriculture, Gansu Acadamy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
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| Abstract: |
| A study on the effects of different fertilization conditions on the yield of winter rapeseed, soil water and water use efficiency was carried out in dry land of Loess Plateau. The results showed that the yield of winter rapeseed and water use efficiency were extremely increased in manure combined with chemical fertilizer, it was increased by 12.95% and 10.74% respectively compared to that without manure. The highest yield and soil water consumption and water use efficiency were 1 180.05 kg·hm-2 and 489.73 mm and 2.41 kg·hm-2·mm-1 under the MNPK treatment，compared to CK treatment，it was enhanced by 369.32% and 6.40% and 338.18% respectively. Of all the treatments, compared to that before sowing，soil water content decreased quickly under different treatments in different soil layers，soil water content decreased by about 8% in 0～20 cm soil layer after harvest，the soil water storage of 0～100 cm soil layer of CK treatment was highest which was 244.36 mm. Combined fertilizer could enhanced crop yield, but it also could increase water consumption at the same time, the soil appeared a dry trend. |
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