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以浙江衢州红壤性水稻土为试材进行水稻田间试验和盆栽试验。结果表明,有机肥和有机无机肥配施能提高土壤磷的有效性;植稻后,土壤 pH 值进一步提高,有利于水稻根系生长,促进水稻对磷的吸收,增加了地上部分干物质积累;水稻分蘖期地上部生物量与根系α-萘胺氧化力和吸磷量均呈显著正相关(r=0.953和r=0.978)。随着水稻的生长发育,各处理土壤有效磷均不断下降,而水稻产量与其降幅显著相关(=-0.950)。亩施猪厩肥750公斤和化肥磷1.6公斤,可满足水稻需磷并提高土壤的供磷水平,还比单施等磷量的化肥或有机肥有一定的增产效果,可作为合理利用有机肥源、配施磷化肥的科学依据。
A field experiment and pot experiment were conducted in paddy soil of Quzhou, Zhejiang Province. The results showed that the combined application of organic manure and organic manure could increase the availability of soil phosphorus. After planting rice, soil pH was further increased, which was beneficial to the growth of rice roots, the absorption of phosphorus by rice and the accumulation of above-ground dry matter. The shoot biomass at the tillering stage was positively correlated with the oxidation of α-naphthylamine and P uptake (r = 0.953, r = 0.978). With the growth and development of rice, soil available P decreased continuously, while the rice yield was significantly correlated with its decline (= -0.950). Mushi Shi pig manure 750 kg and fertilizer 1.6 kg, to meet the phosphorus demand and improve the level of phosphorus for the soil, but also than the amount of phosphorus and other fertilizer or organic fertilizer have a certain effect, as a rational use of organic fertilizer , With the scientific basis for phosphate fertilizer.