| 15N标记绿肥喂猪后还田的转化和效益的研究 |
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| 引用本文： | 何电源,廖先苓,周卫军.15N标记绿肥喂猪后还田的转化和效益的研究[J].土壤学报,1994,31(3):277-286. |
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| 作者姓名： | 何电源 廖先苓 周卫军 |
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| 作者单位： | 中国科学院长沙农业现代化研究所, 410125;中国科学院长沙农业现代化研究所, 410125;中国科学院长沙农业现代化研究所, 410125 |
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| 基金项目： | * 中国科学院土壤圈物质循环开放研究实验室基金 |
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| 摘 要： | 本文用１５Ｎ标记绿肥与无Ｎ淀粉配制成饲料喂猪，猪体平均回收饲料１５Ｎ２３．５１％；猪粪回收１５Ｎ２３．８５％，猪尿回收１５Ｎ２８．７６％；饲料绿肥Ｎ的总回收率为７６．１２％。猪粪，尿还田，水稻全株对Ｎ的回收分别相当于饲料绿肥Ｎ的３．７５％和７．．２５％。其中转化至稻谷的分别为２．５１％和４．８２％。以经济产品计算，猪体和稻谷共回收饲料绿肥１５Ｎ３０．８４％，比１５Ｎ绿肥与尿素配施还田稻回收的绿肥Ｎ
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| 关 键 词： | 猪粪尿还田 氮15标记 绿肥 转化 |
EFFICIENCY AND TRANSFORMATION OF 15N-LABELLED GREEN MANURE AFTER FEEDING PIG AND APPLYING TO PADDY FIELD |
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| He Dianyuan,Liao Xianling and Zhou Weijun.EFFICIENCY AND TRANSFORMATION OF 15N-LABELLED GREEN MANURE AFTER FEEDING PIG AND APPLYING TO PADDY FIELD[J].Acta Pedologica Sinica,1994,31(3):277-286. |
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| Authors: | He Dianyuan Liao Xianling and Zhou Weijun |
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| Institution: | Changsha Institute of Agricultural Modernization, Academia Sinica, 410125;Changsha Institute of Agricultural Modernization, Academia Sinica, 410125;Changsha Institute of Agricultural Modernization, Academia Sinica, 410125 |
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| Abstract: | 15N-labelled green manure mixed with nitrogen-free starch was used to feed pigs in the study. The results showed that the amount of 15N transformed into the bodies of the two slaughtered pigs accounted for 23.51% on average, of the total amount of 15N deposition in the experimental diet taken by each pig. The 15N excreted through the feces and urine of the two pigs accounted for 23.85% and 28.76%,respectively, of the total amount of 15N deposition in the feed (green manure) of pigs. The average recovery of total 15N for the two pigs was 76.12%.At the same time, the mean digestibilities of carbohydrates for two pigs was 75.63%.The results of rice micro-plot experiment showed that the amount of 15N transformed from pig feces and urine into whole rice plant accounted for 3.75% and 7.25% of the total amount of 15N deposition of the feed-green manure respectively, of which 2.51% and 4.82% of the total 15N were transformed into rice grain, respectively. The pig bodies and rice grain recovered altogether 30.84% of the feed-green manure N, being 15.7% relativly higher than that in the plot of combined application of green manure and urea where rice grain recovered 26.65% of the 15N-labelled green manure N. |
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| Keywords: | 15N-labelled green manure to feed pigs Pig excrements returning to paddy field Green manure returning to paddy field |
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