写在前面的话，学习Python时，发现notebook很好用，又发现里面可以运行R代码。本身也正在学习markdown语法，就以此为契机，将cookbook里面的东西翻译一下。希望对后来者有用。
安装agricolae
如果没有安装的话，需要键入下面代码安装agricolae软件包：
install.packages("agricolae")如果已经安装了，直接键入下面代码载入agricolae包：
library(agricolae)随机区组试验设计
假设20个品种A1~A20,种植4个区组，怎么设计，代码如下
library(agricolae)
cul <- paste("A",1:20,"")
rcbd <- design.rcbd(trt = cul,r = 4)
rcbd$book| plots | block | cul |
|---|---|---|
| 101 | 1 | A 10 |
| 102 | 1 | A 8 |
| 103 | 1 | A 18 |
| 104 | 1 | A 1 |
| 105 | 1 | A 4 |
| 106 | 1 | A 2 |
| 107 | 1 | A 17 |
| 108 | 1 | A 12 |
| 109 | 1 | A 7 |
| 110 | 1 | A 13 |
| 111 | 1 | A 11 |
| 112 | 1 | A 16 |
| 113 | 1 | A 19 |
| 114 | 1 | A 5 |
| 115 | 1 | A 6 |
| 116 | 1 | A 15 |
| 117 | 1 | A 3 |
| 118 | 1 | A 14 |
| 119 | 1 | A 20 |
| 120 | 1 | A 9 |
| 201 | 2 | A 6 |
| 202 | 2 | A 4 |
| 203 | 2 | A 17 |
| 204 | 2 | A 16 |
| 205 | 2 | A 8 |
| 206 | 2 | A 18 |
| 207 | 2 | A 15 |
| 208 | 2 | A 20 |
| 209 | 2 | A 14 |
| 210 | 2 | A 10 |
| … | … | … |
| 311 | 3 | A 12 |
| 312 | 3 | A 6 |
| 313 | 3 | A 11 |
| 314 | 3 | A 19 |
| 315 | 3 | A 2 |
| 316 | 3 | A 1 |
| 317 | 3 | A 14 |
| 318 | 3 | A 10 |
| 319 | 3 | A 5 |
| 320 | 3 | A 8 |
| 401 | 4 | A 5 |
| 402 | 4 | A 7 |
| 403 | 4 | A 8 |
| 404 | 4 | A 11 |
| 405 | 4 | A 17 |
| 406 | 4 | A 18 |
| 407 | 4 | A 19 |
| 408 | 4 | A 4 |
| 409 | 4 | A 2 |
| 410 | 4 | A 6 |
| 411 | 4 | A 12 |
| 412 | 4 | A 3 |
| 413 | 4 | A 1 |
| 414 | 4 | A 16 |
| 415 | 4 | A 20 |
| 416 | 4 | A 14 |
| 417 | 4 | A 15 |
| 418 | 4 | A 13 |
| 419 | 4 | A 9 |
| 420 | 4 | A 10 |
田间种植图如下：
其中，每一行表示一个区组，一个区组有A1~A20个品种
rcbd$sketch| A 10 | A 8 | A 18 | A 1 | A 4 | A 2 | A 17 | A 12 | A 7 | A 13 | A 11 | A 16 | A 19 | A 5 | A 6 | A 15 | A 3 | A 14 | A 20 | A 9 |
| A 6 | A 4 | A 17 | A 16 | A 8 | A 18 | A 15 | A 20 | A 14 | A 10 | A 3 | A 1 | A 7 | A 19 | A 9 | A 12 | A 5 | A 13 | A 2 | A 11 |
| A 15 | A 9 | A 4 | A 3 | A 7 | A 17 | A 16 | A 13 | A 18 | A 20 | A 12 | A 6 | A 11 | A 19 | A 2 | A 1 | A 14 | A 10 | A 5 | A 8 |
| A 5 | A 7 | A 8 | A 11 | A 17 | A 18 | A 19 | A 4 | A 2 | A 6 | A 12 | A 3 | A 1 | A 16 | A 20 | A 14 | A 15 | A 13 | A 9 | A 10 |
