作者gto37513 (剃)
看板NCHU-ENVE102
標題[討論] 這次的環化作業
時間Sun Oct 24 21:54:17 2010
Homework Assignment #03
1. What soil pH range do most crop plants prefer?
2. What are five most abundant elements in typical soil?
3. Grass requires a lot of nitrogen. Which of the following two fertilizers
should be used to fertilize grass?
a. 20-10-10
b. 10-30-10
4. Calculate the CEC of 1 g of a soil that releases the following
concentration of ions in the ammonium acetate test.
Ca2+ = 30.8 μg/ml
Mg2+ = 8.4 μg/ml
K+ = 2.2 μg/ml
Na+ = 6.4 μg/ml
Is this a good soil for agricultural purposes?
5. Prepare a figure of distribution of phosphate species as a function of pH
by using Excel (include the data sheet in your dued homework) and indicate
the fraction of each phosphorus species (αH3PO4, αH2PO4-,αHPO42-,αPO43-)
at pH 4.6.
這次換我貼^.<
答案交給你們了
還有一項作業是要做Excel表格
還有他在課堂上寫的：
B5^3/(B5^3+B5^2*SBS1+B5*SBS1*SBS2+SBS1*SBS2*5BS3)
有點不太清楚他在寫什麼
最後一點
在兩個禮拜就期中考嚕~
快看書吧!
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◆ From: 140.120.222.219
1F：推 mafiataiki:靠 新的環化課本沒土壤 根本不能讀= = 10/24 22:26
2F：→ gto37513:不知道他的講義有沒有 來去看看 10/24 22:38
3F：→ gto37513:第一題在講義45頁 10/24 22:44
4F：→ gto37513:第二題講義14頁 10/24 22:50
5F：→ gto37513:第三題講義78頁 10/24 23:03
6F：推 d080644977:阿德超威的耶 10/24 23:15
7F：→ gto37513:第四題講義23頁 然後想想答案是什麼 10/24 23:22
8F：→ gto37513:原來Excel那一項作業是第五題喔 10/24 23:25
9F：→ gto37513:修正：第四題講義23~27頁 10/24 23:28
10F：推 d080644977:阿德還是威 10/24 23:32
11F：→ gto37513:修正：第四題為Na+ 10/24 23:45
※ 編輯: gto37513 來自: 140.120.222.219 (10/24 23:47)
12F：推 d080644977:阿德把找片的功夫拿來看環化了 10/24 23:58
13F：→ gto37513:我熬夜了 哭哭 10/25 00:05
14F：推 mafiataiki:阿德快找答案 高逸傑抓新片給你 10/25 00:05
15F：→ gto37513:第四題的問答在22頁 10/25 08:08
16F：→ gto37513:最後一題我不會~~" 10/25 08:08