The use of organic wastes in southern Brazil is a common practice in the farms and in many of these, the criterion for defining the doses of organic wastes is to meet the N demand by crops. This may mean the accumulation of chemical elements in the soil, especially in soils managed under no-tillage systems, and enhance the transfer of these elements by surface runoff. The aim was evaluated how successive applications of organic and mineral sources of nutrients in a long-term experiment, managed under no-tillage system in a subtropical environment, influence the transfer of quantities and forms of N and P by surface runoff. The experiment was carried out in southern Brazil, in a Typic Hapludalf soil. The treatments consisted of the application of pig slurry, pig deep litter, cattle slurry, mineral fertilizer and a control, without nutrients. The doses of organic wastes were to meet the N demand by crops. Were evaluated the surface runoff and the transfers of mineral N and forms of P (soluble, particulate, and total) from 2009 to 2013 period. The amount of solution transferred by surface runoff decreased with fertilization and present a negative relationship with the soil organic matter (SOM). The transfers of mineral N increased with the increase in the contents of SOM, but decreased with the runoff. The transfers of P forms present a great relationship with the amounts of P applied and the contents of soil P extracted by Mehlich-1, and more than 55% of total P transferred by surface runoff, in the treatments that received nutrients application, is on soluble form. In addition, the transfer of soluble, particulate and total P was lower with mineral fertilizer application, when compared with organic wastes. This suggest that the use of N demand by crops as a criterium to meet the doses of organic wastes is not adequate in subtropical environment.

在巴西南部，有机废物的使用在农场中很普遍，在许多农场中，定义有机废物剂量的标准是满足农作物对氮的需求。这可能意味着化学元素在土壤中的积累，特别是在免耕系统管理的土壤中，并通过地表径流增强了这些元素的转移。目的是评估在亚热带环境中在免耕系统下进行的长期实验中连续施用有机和矿物养分来源如何影响地表径流对氮和磷的数量和形式的转移。该实验是在巴西南部典型的Hapludalf土壤中进行的。处理方法包括施用猪粪，猪深层垫料，牛粪，矿物肥料和无营养的对照。有机废物的剂量要满足农作物对氮的需求。研究人员评估了2009年至2013年期间的地表径流以及矿物N和P形态（可溶性，颗粒状和总量）的转移。通过表面径流转移的溶液量随施肥量的减少而减少，与土壤有机质（SOM）呈负相关。矿质氮的迁移量随SOM含量的增加而增加，但随径流而减少。在接受养分施用的处理中，磷形态的转移与施用的磷的量和Mehlich-1提取的土壤磷的含量有很大的关系，并且在地表径流转移的磷总量中，有超过55％处于施用状态。可溶形式。此外，施用矿物肥料后，可溶性磷，微粒和总磷的转移降低，与有机废物相比。这表明在亚热带环境中，农作物利用氮的需求作为满足有机废物剂量的标准是不够的。