Replacement of mineral fertilizers with anaerobically digested pig slurry in paddy fields: assessment of plant growth and grain quality
Replacement of mineral fertilizers with anaerobically digested pig slurry in paddy fields: assessment of plant growth and grain quality
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DOI：
10.1007/s11356-015-5125-z
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发表时间：
2017-04-01
影响因子：
5.8
通讯作者：
Christie, Peter
中科院分区：
文献类型：
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作者：
Zhang, Jin;Wang, Minyan;Christie, Peter
水稻种植需要大量的灌溉水和矿物肥料。这为厌氧消化的猪粪中的植物营养物质的回收提供了机会，中国养猪场产生了大量猪粪。为此，为促进畜禽养殖和水稻生产的可持续发展，开展了微小区田间试验，从水稻分蘖、品质和产量等方面评价泥浆能否替代矿肥生产水稻。结果表明，与对照（450 kg ha(-1)商品复合肥（N/P2O5/K2O=15:15:15）基肥、300 kg ha(-1)尿素（N%=46）、150 kg ha(-1)商品复合肥追肥）相比，浆液总氮含量可作为氮素的替代来源。尽管由于谷物铜浓度增加可能存在潜在风险，但没有观察到对植物生长或谷物产量的负面影响。使用浆液作基肥，米粒直链淀粉含量和凝胶稠度显着提高，但籽粒蛋白质和总氨基酸含量下降。结果表明，厌氧消化猪粪作为基肥与尿素、商品复合肥一起作为追肥，可以替代水稻生产中的矿物肥料。
Rice cultivation requires large quantities of irrigation water and mineral fertilizers. This provides an opportunity for the recycling of the plant nutrients in anaerobically digested pig slurry, large amounts of which are generated in Chinese pig farms. Hence, to promote the sustainable development of livestock and poultry breeding and rice production, a micro-plot field experiment was carried out to assess whether or not slurry can replace mineral fertilizers in rice paddy production in terms of plant tillering, grain quality, and yields. The results indicate that the total N content of the slurry can serve as an alternative source of N when compared to the control (450 kg ha(-1) commercial compound fertilizer (N/P2O5/K2O = 15:15:15) as basal fertilizer, 300 kg ha(-1) urea (N% = 46), and 150 kg ha(-1) commercial compound fertilizer as top-dressed fertilizer). No negative effects on plant growth or grain yield were observed, although there may be a potential risk due to an increase in grain Cu concentration. The amylose content and gel consistency of the rice grains were enhanced significantly by the use of slurry as a basal fertilizer, but the grain protein and total amino acid contents decreased. The results suggest that anaerobically digested pig slurry can replace mineral fertilizers in rice production when applied as a basal dressing together with urea and commercial compound fertilizer as top-dressed fertilizers.