| Effects of phosphorus and manure on canola growth period, grain yield and quality |
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| DOI：10.7606/j.issn.1000-7601.2016.05.22 |
| Key Words: phosphorus manure canola growth period yield quality |
| Author Name | Affiliation | | LEI Jian-ming | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741000, China | | YANG Zhi-qi | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741000, China | | E Sheng-zhe | Institute of Soil and Fertilizer and Save Water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | LUO Zhao-xia | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741000, China | | YUAN Jin-hua | Institute of Soil and Fertilizer and Save Water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | GUO Yong-jie | Institute of Soil and Fertilizer and Save Water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | CHE Zong-xian | Institute of Soil and Fertilizer and Save Water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
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| Abstract: |
| A field experiment with the split-split block design was carried out to study the effects of applying manure and phosphorus on canola growth period, grain yield and quality. The main treatments were manure (M) and no manure (M0). Sub-split treatments were four phosphorus application rates at 0, 75, 150 and 225 (P2O5) kg·hm-2(P0, P75, P150 and P225, respectively). Sub-sub-split treatments were three main planting canola varieties in Tianshui region including Tianyou 8, Tianyou 07302 and Tianyou 191 (V1, V2 and V3). The results showed that application of manure prolonged canola reproductive growth period by 2 days, while it had not evident effect on vegetative growth and total growth periods. However, application of phosphorus can shorten canola vegetative growth period by 3 to 5 days, prolonged reproductive growth period by 6 to 15 days, and eventually prolonged canola total growth period by 6～8 days. Application of manure increased canola yield by 13.32%, whereas it had not significant effect on canola seed quality compared with M0 treatment. Application of phosphorus had significant effects on rape yield and quality. Phosphorus significantly increased canola yield and erucic acid content. The changing trend was firstly increased and then became decreased with the increase of phosphorus application rates. Compared to the control treatment (P0), canola yield and erucic acid content by P75, P150 and P225 treatments were increased by 94.01%, 137.63%, and 122.64%, and 1.98%, 3.37%, and 1.70%, respectively. Grain oil content was always increased with the increase of phosphorus application rates. The highest oil content was reached by P225 treatment, increased by 3.61% compared with the control treatment (P0), but no significant difference was found between P150 treatment and P225 treatment. On the contrary, application of phosphorus significantly decreased grain protein and glucosinolate content. The more phosphorus was applied, the more grain protein and glucosinolate content went declined, reduced by 4.27% and 2.25% by the P225 treatment from the control treatment (P0). |
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