不同禽粪的稳定性、成熟度及其在园艺生产中的潜在利用

M. Mataa, Namakau Manzi, K. Munyinda
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引用次数: 4

摘要

本研究评估了不同家禽产仔的稳定性、成熟度和功效,以供集装箱工厂生产之用。试验采用3种类型的鸡粪(BC)、深窝粪(DL)和散养粪(FR),并以克拉尔粪(KM)为对照。试验设6个重复,采用裂-裂设计。堆肥期为主要小区,禽粪类型为分块小区,混合比例为分块-分块小区。将凋落物与花园土壤按3:1和1:1的土粪比混合,试验长达12周。以油菜(Brassica napus)为研究对象,分别在1个月、2个月和3个月进行成熟度测定。除粪肥外,其余处理的pH值均从7下降到6左右。呼吸趋势与电导率相似。在养护2周内,所有肥料的呼吸速率降至4 mg CO2- C/ kg以下。12周养护结束时,蓄电池笼总氮最高(2.32%),散养笼次之(1.25%),深层凋落物最低(0.73%),Kraal粪肥最低(0.35%)。成熟度(油菜存活率)随合成时间的延长而增加。处理3个月后,油菜成活率最高。1:1比例的DL生存率最低,为67%。在12周时,除3:1的BC外,所有治疗的存活率均为100%。结果表明,富氮肥料(DL和BC)需要较长的养护时间才能达到成熟。
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Stability and Maturity of Different Poultry Manures and Potential Utilization for Horticultural Production
This study evaluated stability, maturity and the efficacy of different poultry litter for possible use in container plant production. Three types of poultry manure- Battery cage (BC), Deep litter (DL) and Free range (FR) were used, with Kraal manure (KM) as a comparison. The experiment was set up as a Split- split design with 6 replications. Composting period was main plot, poultry manure type the split plot and mixing ratio as the split- split plot. The litter was mixed with garden soil in 2 ratios (3:1 and 1:1 soil: manure ratio) and tested for up to 12 weeks. Rape (Brassica napus) was used as a bioassay for maturity, which was determined at 1 month, 2 months and 3 months. The pH declined slightly from 7 to about 6 for all treatments except for the kraal manure. Respiration trends were similar to electrical conductivity. Within 2 weeks of curing the respiration rate for all manures declined to below 4 mg CO2- C/ kg. At the end of 12 weeks curing Battery cage had highest total nitrogen (2.32 %), followed by Free range (1.25 %), Deep litter (0.73 %) and Kraal manure was lowest at 0.35 %). Maturity (rape survival) increased with compositing time. After 3 months of curing Kraal manure had highest survivability of rape. The DL at 1:1 ratio had the lowest survival of 67%. At 12 weeks except for BC at 3:1 all treatments had 100 % survival. The results showed that nitrogen rich manures (DL and BC) needed longer curing in order for them to reach maturity.
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