Xin Shu

7 Questions 30 Answers 0 Followers

Questions related from Xin Shu

Soil fungi ITS2 region PCR acmplicons have double bands?

Hi everyone, I want to amplify soil fungal ITS2 region. But I tried three times with concentrated DNA, diluted DNA, the gel picture always showed double bands. Although I increased the anneal...

02 February 2020 6,381 3 View

Alternative regression way to analyze relationship between parameters in a limited data?

Hi all, I have a data set, including soil respiration and carbon amount. After plotting a scatter plot respiration vs carbon amount, I can see there is kind of positive relationship between them....

06 June 2019 8,048 5 View

How to adjust soil pH accurately?

Dear all, I want to adjust the certain amount of soil pH precisely. How much CaCO3 I should add into 200 g soil to increase the pH from 4 to 8? And would this change other properties of soil (e.g....

08 August 2016 7,889 16 View

Is there anyone can tell me what is the relationship between soil water matrix potential (or water retention curve) and water filled pore space?

Meanwhile, if the soil should be pre-treatment to do a water tension table, such as oven dry the soil? Thank you very much. Best regards, Xin

04 April 2015 1,254 8 View

Should gas be added to compensate the reduced pressure in the test of soil potential denitrification rate?

In order to test soil potential denitrification rate (acetylene inhibition, and analyse the N2O at intervals of 1, 2, 3, and 4 h) in lab. Do you add the same volume of gas into the closed system...

11 November 2014 4,517 19 View

Which is the soil inorganic carbon source for microbes?

For soil C mineralization, can inorganic & organic C be mineralized by microbes? If there is inorganic carbon in soil can be used, what are they? Such as CaCO3, or anything else? Many thanks...

11 November 2014 10,022 10 View

How can I test soil water-filled pore space?

Hi, I am doing soil water-filled pore space (WFPS). I don't know why researchers tend to make soil bulk density at 1.1 g/cm3 during the test? Besides, what factors will affect the results of...

11 November 2014 3,781 14 View