Table 2 Effects of intercropping treatments and years on soil nutrient indicators at the two experimental sites.

From: Effects of different intercropping systems on soil properties and tobacco yield and quality

 

Midu

Weishan

TN

TP

TK

HN

AP

AK

TN

TP

TK

HN

AP

AK

Treatment

***

**

*

**

***

***

**

**

***

***

***

***

Year

**

*

*

**

**

*

*

ns

ns

*

*

*

Treatment × Year

*

*

ns

*

*

*

ns

ns

ns

*

*

*

  1. The abbreviation “ns” indicates no significant difference (P > 0.05), while *, **, and *** represent significance at the levels of P < 0.05, P < 0.01, and P < 0.001, respectively. Midu and Weishan refer to the two experimental sites, same as below.
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