开始没有
发表于 2025-3-23 13:12:12
http://reply.papertrans.cn/16/1577/157609/157609_11.png
替代品
发表于 2025-3-23 16:18:03
http://reply.papertrans.cn/16/1577/157609/157609_12.png
Anticoagulants
发表于 2025-3-23 18:13:35
Distribution of excreted nitrogen by grazing cattle and its effects on sward quality, herbage produche greatest influence on the response of pasture production to N fertilization..Two one-year experiments are described which showed that there were no significant differences in the response of grassland production to N fertilization between cutting and grazing usage above about 200 kg N ha. yr..
liposuction
发表于 2025-3-24 01:21:53
History of Concepts for Ecologyme the infrastructure for manure transport to areas with a manure shortage should be strengthened and plants for manure processing introduced. A reduction in nutrient excretion by changing animal nutrition is considered to be possible. Results obtained up to the present are discussed.
UTTER
发表于 2025-3-24 04:27:14
http://reply.papertrans.cn/16/1577/157609/157609_15.png
美色花钱
发表于 2025-3-24 09:55:09
Conference proceedings 1987ional Symposium on a topic related to intensive grass and fodder production systems. The theme selected was "Animal manure on grassland and fodder crops: Fertilizer or waste?" This Symposium was organized under the auspices of the European Grassland Federation and held at the International Agricultu
indecipherable
发表于 2025-3-24 11:49:27
http://reply.papertrans.cn/16/1577/157609/157609_17.png
Terminal
发表于 2025-3-24 16:09:54
Effects of herbage composition and supplement feeding on the excretion of nitrogen in dung and urine N utilization in cows grazing intensively managed pastures, is 15 to 25%. When young leafy grass is the sole feed this figure cannot be altered substantially without reducing animal performance. Supplementing the diet of grazing dairy cows with a low-protein, high-energy feed (special concentrates
粗鲁的人
发表于 2025-3-24 19:13:36
Manure as a source of nitrogen and phosphorus in soilsdepends on the origin of the manure (the species, age and production level of the animal and the corresponding composition of their diets), on the housing, manure collection and manure storage systems and on any possible manure treatment. During storage of slurry the composition moves towards 40–70%
CAB
发表于 2025-3-24 23:51:56
Utilization of nitrogen from injected and surface-spread cattle slurry applied to grasslandyears. In two experiments, surface application of slurry was included; all slurry applications were made in the spring. In each experiment three rates of slurry application were used, the maximum rates were 40tha. yr. and 80 or 90t ha.yr. for the surface-spread and injected treatments, respectively.