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??soil and water conservation?

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Title: ??soil and water conservation?


1
???????????
  • ???????
  • ? ????

2
??soil and water conservation?
????????,??????????????????,????????????,?????????
???,?????????????,??????????(Dr. Robert M.
Salter)
3
  • ?????
  • ?????,?????????????2.5????150?1000??(RATTAN
    LAL, 1994)
  • ????????
  • ??????????,????????????????????????????,???????
    ??????

4
  • ?????????
  • ????,?????????
  • ?????,???????????
  • ???????,?????????
  • ???????,??????,???????

5
  • ?????????????
  • ??
  • ????????
  • ??
  • ?????,???????
  • ???????,???????
  • ???????????????

6
??????????????????
(???????, 1974??kg/50m2)
7
???????...... ????????????????,????????????????
??????????????????? ??????,????????????????????
8
??????????
  • ????,????
  • ??????????????????????????
  • ???????(runoff)
  • ??????,????,???????????

9
??????????
(???, 1970????/??)
10
?????????????
(???, 1970??kg/75m2)
11
  • ??????????????????
  • ???????????????????????????
  • ?????????????,???????????

12
???????????????
(??, 1986??10-3??/??)
13
???????????????,?????????????,????????,???????(??,
1986) ????????????????????????????
14
???????????? 1.????,??????? 2.?????? 3.?????????
???
15
?????????? 1.?????? ???????? 2.????? ?????????
????????????????
16
????????????
(???, 1970)
17
?????????????
(???, 1970??kg/75m2)
18
  • ??????
  • ?????????????
  • ?????????????
  • ??32P?????????????????????????????45???,??????????
    65????27???(???????, 1978)

19
????????????????
(??? ?, 1978PC????)
20
  • ???????????
  • ????????
  • ???????(allelopathy)???
  • ???????????

21
?????????? 1.?????? ???????? 2.????? ?????????
????????????????
22
  • ????????????
  • ??????????,????????
  • ???????????
  • ???????,?????????

23
  • ????????
  • ???????????
  • ????????????
  • ???????????
  • ????????????,?35??????,???20????????
  • (???, 1982)

24
??????? ??(stargrass) ?????????,
1957 ?????????? ???(paragrass) ?????????,
1961 ??????????,?????????
25
  • ?????????
  • ???????
  • ????????????????????
  • ???????

26
  • ????????????
  • ?????????
  • ???????????????

27
  • ??????????
  • ??????????????
  • ???????????,????????

28
  • ? ?
  • ??????????????,?????,????,????????
  • ????????????????????
  • ??????????????????????,??????????????

29
  • ???????????
  • ????????
  • ????????????
  • ?????????
  • ?????????

30
  • ???(Vetiveria zizanioides)
  • ??
  • ????
  • ??????
  • ?????
  • ???????????
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