DB1507-T 91-2023 牧業(yè)氣象觀(guān)測(cè)規(guī)范 禾本科牧草

ICS

CCS

B

1507 牧業(yè)氣象觀(guān)測(cè)規(guī)范

禾本科牧草

2023-11-13

發(fā)布 2023-12-13

實(shí)施呼倫貝爾市市場(chǎng)監(jiān)督管理局??發(fā)

布 ........................................................................................................................................................................

II

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A（規(guī)范性）

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B（規(guī)范性）

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C（規(guī)范性）

........................................................................................................................ ..............................................................................................................................................................I 本文件按照GB/T

第1部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定II

1

2

3

3.1

3.2

4

4.1

4.1.1

4.1.2

4.2

5

5.1

5.2

5.3

5.3.1

株數(shù)第一次≥10%為始期，≥50%為盛期，進(jìn)入盛期后停止統(tǒng)計(jì)百分率，牧草物候期觀(guān)測(cè)只記錄始期、f=

·········································································物候期百分率，以%表示；p5.3.2

1

1

6

6.2

度＞80%度61%～80%產(chǎn)量低，最大覆蓋度在21%～40%植株極少，覆蓋度＜20%，不返青或草場(chǎng)不能利用a)

制作一個(gè)內(nèi)部面積

a)

制作一個(gè)內(nèi)部面積

m

正方形樣方框，將方框內(nèi)草種按先高后低順序，留茬高度

cm，分類(lèi)6.3

7

7.1

7.2

a)

b)

7.3

a)

數(shù)、鮮重牧草占比量，生長(zhǎng)狀況測(cè)小區(qū)內(nèi)行，選擇代表

觀(guān)測(cè)點(diǎn)，b)

7.4

下所測(cè)草，數(shù)清株并稱(chēng)重，號(hào)后放入袋。將框其余牧草部剪下，號(hào)后放入

d

2%，確定后者為風(fēng)干重；b)

2

2

7.5

a)

牧草占比：該品種鮮重與方框內(nèi)牧草總鮮重比值，按照（2）式求出百分率，取整數(shù)，小數(shù)四

······································································ggb)

······································································g8

8.1

8.2

9

9.1

9.2

9.3

9.3.1

9.3.2

過(guò)程氣溫≤0

期差值（mm）、地段干土層厚度（cm）、

凋萎（＜50%）（≥50%）日降水量（mm）、累計(jì)降水量（mm）、期差值（mm）、地段干土層厚度（cm）、

cm土壤相對(duì)濕度（%）積＜10%≤25%面積≤50%積＞50%

3

3

10

A.2.3

m

A.2.3

m

A.1

A.2

A.2.1

A.2.2

勻，圍成正方形（100

m）；若在緩坡地上，長(zhǎng)邊應(yīng)與緩坡一致；在丘陵山區(qū)，地形復(fù)雜，觀(guān)A.2.4

A.3

A.3.1

A.1

A.2

A.3.2

A.3

d)

e)

d)

e)

BB.1

觀(guān)測(cè)簿分為牧草分種觀(guān)測(cè)記錄簿（牧氣簿-1-1）和牧草綜合觀(guān)測(cè)記錄簿（牧氣簿-1-2）。用于牧B.2

牧氣簿-1-1

B.2.1

牧氣簿-1-1記錄分種牧草物候期及高度，每種牧草一年一冊(cè)。B.2.2

B.2.3

B.2.4

B.3

牧氣簿-1-2

B.3.1

B.3.2

B.3.3

a)

b)

c) f)