| The wastewater is produced with the rapid development of concentrated swine farms, it is seriously to deal with the environment pollution and land resource shortage. Because of the serious gap between agriculture and animal husbandry presently, swine manure wastewater from the scale breeding can not used rationally as organic fertilizer, which causes serious pollution problems. And excessive use of fertilizers in scale planting results in soil hardening and fertility declining, while there is not enough organic fertilizer used to improve soil fertility. At the same time, the problem of occupying cultivated land and serious disease and so on still exist in general fixed-pigsty model. In order to resolve the above problems from their root, we have to develop the migration portable and environment-friendly pigsty (removable pig house) which is suitable for crop-animal combined production. Our studying team has got the key parameters of crop-animal combined production by applying the removable pig house through the feeding trial and the bearing capacity tests of the swine manure wastewater in the land planted in the winter and autumn, but there are not any key parameters could provide a theoretical basis for the application of the removable pig house in summer.The feeding trial was to study the effects of removable pig house on temperature, humidity, and the growth of fattening pigs on performance and digestibility.216 growing-finishing crossbred(Duroc X Landrace X Yorkshire) pigs with the weight of about 60 kg were Selected and divided into two groups according to completely block design respectively, the removable pig house group and general fixed pig house group. There were three repetition and 36 pigs in each repetition with equal male and female. The pigs were feed from they were about 60 kg to about 100 kg. The feeding density of the two groups was kept for 1.1/m2 and the feed source and nutrition level were the same, and the pigs feed freely.The results shows that, Relative humidity is suitable for finishing pigs within the scope of humidity. The average final weight of the fattening pigs in the removable pig house was higher than pigs kept in fixed pig house for 6.34%(P< 0.01), the average daily gain and average daily feed intake were higher than the fixed-pigsty group for 18.75%(P<0.01) and 7.35%(P<0.01); The feed to gain was lower for 10.42%(P <0.05).when the high daily temperature is 36.5℃, the average temperature of the removable pig house was 28.03℃, the mean daily temperature difference was 2.75℃, and the average relative humidity of 70.50; Data of the fixed pig house was 29.83℃, 5.87℃and 70.4 respectively. Among these data, the difference of average temperature was extremely significant. When the high temperature is above 35.8℃, the daily high temperature is significant.Determination of pig manure and urine wastewater excretion was arranged into a cycle of every 5 days. Summation of weight of each unit in a cycle was the total fecal excretion and urine wastewater excretion pollution in feeding period of each unit of removable pig house. The weight of fresh pig manure excretion in each unit of the removable pig house was 3349.9 kg, and compare to 2277.73kg after compost; the weight of fresh urine was 10648.23kg, and it was changed to 12385.07 kg after the ultimate application. The amount of pig manure, composting products, urine wastewater and the actual urine waste water at last for average weight gain of 1 kg of finishing pigs in removable pig house from their 68.56 kg to 104.84 kg was respectively 1.52 kg,1.09 kg,4.32 kg, and 4.06 kg.The bearing capacity tests of the pig waste in the land planted with the cabbage was carried out mainly for the optimum amount of swine waste applied for planting the cabbage, as well as the suited fields of land planted cabbage to match entirely pig waste pollution applied to the cabbage land from the removable pig house. There were seven treatment groups in test land, and they were fertilized by the pig manure with 0,2,4,5, 6 kg/m2 and the pig manure was mixed with urine wastewater to the ratio of 1:4.2, and there were three treatment groups for each repeat, and it was 2.4m2 for each repeat. Samples of the soil were collected after reaped every time, and indicators of the soil fertility, production traits and nutrient content of the cabbage in each group were determined. The result of the bearing capacity test of the pig manure of the land planted the cabbage showed that the optimum weight of the fertilizer applied per square was 5kg, and 18.9 kg urine waste water could be contained for 1 square meter. That is to say, 33335 kg pig manure and 13673.5 kg urine wastewater could be contained for 1 mu of land planted cabbage. The products of cabbage can reach to 4.63 kg/m2,3088.21kg/mu; the matched area of land planted cabbage for the pig waste totally being applied was 455.55 m2, and it was about 0.68 mu according to the demolition-style weight of pig manure compost and urine from each unit of the removable pig house. And the matched area of land for each pig was 7.98 m2.The results of this experiment showed that the pigs' production performance, temperature and humidity environment of removable pig house were better than common fixed pig house. The economic benefit of each raising unit in removable pig house was higher than fixed pig house by 2810.5RMB, while the direct economic benefit made by the cabbage planted in matched area was 1413.20 RMB.
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