??7??2?????(? ?????????????)?“?”?7?????????2?,????,?6?????30??7??????????2?????????,??,????????????,??2?????????????????15??????,?75%????????

????6???30???????,??????? ??

??,7?1??6???2?6??,?????????????????????????,??????????????????????????????????????????????????????????????????????????????????????????????????????????????,????:?139.7???????????105.4?????????99.0??????

????7?2??15????0-20cm?????,??75%?????????????,25%?,?????????

??,??,???????????,?,????????????????????,??

?,???????????????10????????????,??,????????????,7????????????????3??6?????????????,?????????????,??????????????????????????;7?????????8?????????????????,??????????;9?13?,?????????????,??????14??15???????????????,??,????????,???

?????????,?:??????????????????,??????,??,??,?????,??????????????????????????????????????????????,??????????(???????????)

???:?? ??“????”????

?? ?????????? ?????75%??

????:1?????:?????????

2?????????

3???????

4?????????

5?????????????

??7??2?????(? ?????????????)?“?”?7?????????2?,????,?6?????30??7??????????2?????????,??,????????????,??2?????????????????15??????,?75%????????

????6???30???????,??????? ??

??,7?1??6???2?6??,?????????????????????????,??????????????????????????????????????????????????????????????????????????????????????????????????????????????,????:?139.7???????????105.4?????????99.0??????

????7?2??15????0-20cm?????,??75%?????????????,25%?,?????????

??,??,???????????,?,????????????????????,??

?,???????????????10????????????,??,????????????,7????????????????3??6?????????????,?????????????,??????????????????????????;7?????????8?????????????????,??????????;9?13?,?????????????,??????14??15???????????????,??,????????,???

?????????,?:??????????????????,??????,??,??,?????,??????????????????????????????????????????????,??????????(???????????)

???:??