本文選題：豬糞有機肥　切入點：磷積累　出處：《草業(yè)學(xué)報》2017年11期 　論文類型：期刊論文

【摘要】：豬糞的不合理施用導(dǎo)致土壤中磷素大量積累,引起一系列環(huán)境問題。研究磷富集植物在豬糞條件下的磷積累變化特征,可以為提取土壤中過量的磷提供理論依據(jù)。以礦山生態(tài)型粗齒冷水花為研究對象,非礦山生態(tài)型為對照,設(shè)置豬糞有機肥用量為50g/kg,開展土培盆栽試驗。結(jié)果表明:1)豬糞有機肥施用下,兩種生態(tài)型粗齒冷水花地上部和整株生物量隨生長時期的延長均在13周最高,且礦山生態(tài)型顯著高于非礦山生態(tài)型(P0.05),分別為非礦山生態(tài)型的1.43~2.26倍和1.41~2.20倍。2)粗齒冷水花地上部和整株階段性磷積累速率均在9~11周最大。礦山生態(tài)型粗齒冷水花地上部和整株磷積累量均顯著高于非礦山生態(tài)型(P0.05),13周時其地上部和整株磷積累量分別達105.21和119.50mg/株。3)豬糞有機肥的施用提高了土壤有效磷含量、酸性磷酸酶和植酸酶活性。隨生長時期的延長,粗齒冷水花根際酸性磷酸酶和植酸酶活性均在11周最高,礦山生態(tài)型根際植酸酶活性顯著高于非礦山生態(tài)型。豬糞有機肥施用下,礦山生態(tài)型粗齒冷水花生長狀況和磷積累能力均強于非礦山生態(tài)型,其根際較高的酸性磷酸酶和植酸酶活性提高了土壤中磷素的生物有效性,促進了礦山生態(tài)型對磷的吸收積累。
[Abstract]:The unreasonable application of pig manure resulted in a large amount of phosphorus accumulation in soil, which caused a series of environmental problems. It can provide theoretical basis for the extraction of excessive phosphorus in soil, taking the mine ecotype of coarse-toothed cold water flower as the research object and the non-mine ecotype as the control. The pot experiment of soil culture was carried out with 50 g / kg pig manure organic fertilizer. The results showed that under the application of pig manure, the aboveground parts and the whole plant biomass of the two ecotypes were the highest in 13 weeks with the extension of the growth period. And mine ecotypes were significantly higher than non-mine ecotypes (P 0.05), which were 1.43U 2.26 times and 1.41g 2.20 times of non-mine ecotypes, respectively.) the accumulation rate of phosphorus in the overground and whole plant of coarse-toothed cold water flowers was the highest in 9 ~ 11 weeks, and the accumulation rate of phosphorus in the ecotypic coarse-toothed cold water-flower land was the highest. The accumulation of phosphorus in the upper part and the whole plant was significantly higher than that in the non-mining ecotype P0.05N at 13 weeks. The accumulation of phosphorus in the shoot and the whole plant reached 105.21 and 119.50 mg / plant 路3 respectively. The application of organic fertilizer in pig manure increased the content of available phosphorus in the soil. The activity of acid phosphatase and phytase was the highest in the rhizosphere of the cold water with the growth period, and the activity of the acid phosphatase and phytase was the highest at the 11th week. The phytase activity of mine ecotypes was significantly higher than that of non-mine ecotypes, and the growth status and phosphorus accumulation ability of coarse-toothed cold water flowers in mine ecotypes were stronger than those in non-mine ecotypes under the application of pig manure. The higher acid phosphatase and phytase activities in the rhizosphere increased the bioavailability of phosphorus in soil and promoted the uptake and accumulation of phosphorus by mining ecotypes.
【作者單位】： 四川農(nóng)業(yè)大學(xué)資源學(xué)院;四川省農(nóng)業(yè)機械化干部學(xué)校;
【基金】：國家自然科學(xué)基金(41671323) 四川省科技支撐計劃(2013NZ0044)資助
【分類號】：Q945;S141

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