几种新型肥料对水稻产量及稻米镉含量的影响

目的]探究几种新型肥料对水稻产量及稻米镉含量的影响。方法]早、晚稻分别采用陆两优996和五优308,设置5种肥料处理,分别为生物酵素有机肥(F_1)、叶面肥(F_2)、果肥(F_3)和土壤改质肥(F_4)及不施肥处理(CK)。结果]施用新型肥料能提高水稻的产量,与不施肥处理相比,早稻可增产34.97%~45.97%,晚稻可增产10.76%~37.62%。早、晚稻均以施用叶面肥的增产效果最好,分别为9 362.37、11 405.18 kg/hm~2。有机肥、叶面肥、果肥和土壤改质肥均能降低稻米中镉含量,早、晚稻分别以果肥、土壤改质肥的降镉效果最好,分别比不施肥少45.45%、35.71%,且稻米镉含量均为0.18 mg/kg。结论]在保障产量和防治重金属污染的前提下,施用果肥既能提高水稻的产量,又能降低稻米中的镉含量,是一种高产、优质的新型肥料。

Effect of Several New Fertilizer on Yield of Rice and Cadmium Content in Rice

Objective] In order to explore the effect of several new fertilizers on yield of rice and cadmium content in rice.Method] Using Luliangyou 996 and Wuyou308 as early and late rice species respectively,field experiment was carried out by five fertilizer treatments:biological ferment organic fertilizer (F1),foliar fertilizer (F2),fruit fertilizer (F3),modified soil fertilizer organic fertilizer (F4) and non-fertilizer treatment (CK).Result] Application of new fertilizer can increase rice yield,and compared with non fertilization,yield of early rice and late rice can increase by 34.97％-45.97％ and 10.76％-37.62％ respectively.Foliar fertilizer had best effect for promoting production,yield of early rice and late rice was 9 362.37 kg/hm2,11 405.18 kg/hm2,respectively.Organic fertilizer,foliar fertilizer,fruit fertilizer and soil modified fertilizer can all reduce the cadmium content in rice,and cadmium content in early rice and late rice was lowest by fruit fertilizer and soil amendment fertilizer,which was lower than non-fertilizer by 45.45％,35.71％ respectively,and the cadmium content of brown rice was both 0.18 mg/kg.Conclusion] Under the premise of ensuring yield and preventing heavy metal pollution,applying fruit fertilizer can not only increase rice yield,but also reduce cadmium content in rice,which is a new kind of fertilizer with high yield and high quality.