蚯蚓粪和磷肥配施对油菜生长和土壤性质的影响

试验采用盆栽的方法研究磷肥和蚯蚓粪配合施用对油菜生长及土壤理化性状的影响。结果表明:单施磷180 mg/kg时,油菜生物量为33.01 g,在此基础上施用蚯蚓粪30 t/hm2,油菜生物量比单施磷增加61.4%,配施60 t/hm2的蚯蚓粪,油菜生物量比单施磷增加91%。单施用磷3607、20 mg/kg时,油菜生物量分别为17.18 g和12.49 g,比单施磷180 mg/kg时减产48%和164.3%,在施用磷360和720 mg/kg基础上配合施用30 t/hm2的蚯蚓粪,油菜生物量比单施磷增产105.3%和223.1%,施用60 t/hm2的蚯蚓粪,油菜生物量比单施磷增产242.7%和274.5%。此外施用蚯蚓粪还可以增加土壤中各形态磷含量及有机质含量,增加土壤磷酸酶活性。表明配合施用蚯蚓粪可以缓解高磷土壤对油菜生长的抑制作用,从而改善土壤环境,使之更适宜油菜的生长。

Impact of wormcast and phosphorus fertilizer on rape groeth and soil quality

By the method of pot experiment,this paper studied the effects of wormcast and phosphorus fertilizer on the rape growth and the character of physics and chemistry of soil.The results showed that rape biomass was 33.01 g,when 180 mg/kg P was added in soil.At the base of 180 mg/kg P,30 t/hm2 wormcast was added in soil made the rape biomass respectively increase 61.4%.When wormcast was 60 t/hm2,the rape biomass respectively increased 91%.It was respectively 17.18 g,12.49 g,decreased 48%,164.3%,when the amount ...