How to fertilize rice in cold land? Cold rice fertilization program

Rice is the main food crop in China. The cold rice has undergone a long and complicated evolution process, so its fertilizer characteristics are different from those of ordinary rice. Here is a brief introduction to the fertilization scheme for all types of cold rice.

I. Reference fertilization amount of high-yield cultivation of rice in cold regions

We use 11 leaf round grain varieties, medium fertility plots, transplanting density (9×4 inches), insert 25 holes per square meter, 6-7 trees per hole seedling, and require 550-600 ears per square meter. For example, the yield per hectare is 10 tons.

1, diammonium 300 kg 64%

2, urea 500 kg 46%

3, potassium chloride 400 kg 60%

4, zinc sulfate 20 kg 34.5%

5, fulvic acid, biological bacteria, trace elements

note:

1 kg of urea can be replaced with 2 kg of ammonium sulfate.

34.5% zinc sulfate 20 kg can be replaced with 21.5% zinc sulfate 35 kg.

2. The hectares are applied in pure amounts with various fertilizers:

1, the total amount of pure nitrogen (N) 284 kg

2, pure phosphorus (also known as P2O5) 138 kg

3, pure potassium (also known as K2O) 240 kg

4. The ratio of nitrogen, phosphorus and potassium applied to the hectare is 2:1:1.8

5, each hectare with 21.5% zinc sulphate 35 kg or 34.5% zinc sulphate monohydrate 20 kg

6, fulvic acid or amino acid or humic acid micro-fertilizer.

7, the amount of biological bacteria or probiotics Note: the application of fulvic acid, biological bacteria, trace elements, can reduce the amount of fertilizer.

Third, fertilization methods and proportions

1. Phosphate fertilizer (diammonium) is all used as base fertilizer

2. Nitrogen fertilizer

Base fertilizer: tiller fertilizer: regulating fertilizer: panicle fertilizer = 4:3:1:2 ratio of application

Ratio of pure nitrogen in each period = base fertilizer: tiller fertilizer: regulating fertilizer: panicle fertilizer = 114:85:28:57

3, potash, half as base fertilizer, half as booting fertilizer

4, zinc fertilizer, the use of 2/3 of the total amount of tiller, adjust the total amount of fertilizer used 1/3. Or do the split fat

Fertilization of rice in coldland is greatly affected by factors such as rice variety, transplanting density, soil fertility, soil water conservation capacity, fertilizer type, fertilization temperature, fertilization time and fertilization method. Different fertilization schemes should be adopted according to actual conditions when fertilizing.

Fourth, fertilizer and water conservation field fertilization program (hectare)

1, the base fertilizer

(1) diammonium 300 kg

(2) urea 130 kg

(3) Potassium chloride 200 kg

2. Sub-fertilizer 4 leaf stage application

(1) Urea 100 kg

(2) Ammonium sulfate 200 kg

(3) Zinc sulfate (34.5%) 15 kg

3, adjust fertilizer 7 leaf stage application

(1) Ammonium sulfate 130 kg

(2) 5 kg of zinc sulfate

4, the booting fertilizer, the second leaf, the tip of the tip

(1) Urea 80 kg

(2) Ammonium sulfate 100 kg

(3) Potassium chloride 200 kg

5. Sharing per hectare:

Diammonium 300 kg

Urea 310 kg

Ammonium sulfate 430 kg

Potassium chloride 400 kg

20 kg of zinc sulfate (34.5%)

5. Fertilization in sandy loam soil (using fertilization method with less meals)

1, the base fertilizer

(1) diammonium 300 kg

(2) Urea 80 kg

(3) Potassium chloride 150 kg

2, split fat

A, the first time, 4 leaf stage, timely application after transplanting

(1) Ammonium sulfate 150 kg

(2) Zinc sulfate (34.5%) 10 kg

B, the second time, 5 leaf stage application

(1) Ammonium sulfate 100 kg

(2) Urea 80 kg

(3) Zinc sulfate (34.5%) 10 kg

C, third, 6-leaf application

Ammonium sulfate 150 kg

3, regulating fertilizer (7 leaf stage application)

Ammonium sulfate 130 kg

4, the booting fertilizer, the second leaf, the tip of the tip

(1) Ammonium sulfate 100 kg

(2) Urea 80 kg

(3) Potassium sulfate 150 kg

Six, saline-alkali fertilization program

1, the base fertilizer

(1) diammonium 300 kg

(2) Urea 150 kg

(3) Potassium sulfate 150 kg

2, split fat

the first time

(1) Ammonium sulfate 150 kg

(2) Zinc sulfate (21.5%) 20 kg

the second time

(1) ammonium sulfate 300 kg

(2) Zinc fertilizer (21.5%) 15 kg

3, booting fertilizer

(1) ammonium sulfate 200 kg

(2) Potassium sulfate 150 kg

4, after the transplanting, the first time to apply the manure fertilizer, the second time before the June 5th, the second branch of the manure fertilizer, in the inverted 2 leaves exposed tip fertilization. Before and after July 5, the growth of the seedlings was observed to increase or decrease the amount of nitrogen used for the fertilizer.

Seven, muddy field fertilization program

1, the base fertilizer

(1) diammonium 300 kg

(2) Urea 150 kg

(3) Potassium sulfate 150 kg

(4) Proper amount of biological bacteria

2, split fat

(1) Urea 150 kg

(2) 20 kg of zinc sulfate (34.5%)

3, after transplanting, 4 times before the application of tiller

4, booting fertilizer

(1) ammonium sulfate 200 kg

(2) Potassium chloride 150 kg

5, the booting fertilizer should be applied in time when the 2 leaves are exposed. If the growth is too luxuriant, the nitrogen fertilizer should be applied less, or the nitrogen fertilizer should not be applied.

Eight, drought to water fertilization program

1, the base fertilizer

(1) diammonium 240 kg

(2) Urea 100 kg

(3) Potassium chloride 100 kg

2, split fat (two times)

(1) The first 4-leaf period

Ammonium sulfate 150 kg

Zinc sulfate (21.5%) 20 kg

(2) The second 5.5 pre-leaf application

Urea 100 kg

3, the adjustment of fertilizer 7 leaf stage application

(1) Ammonium sulfate 100 kg

(2) Zinc sulfate (21.5%) 15 kg

4, the booting fertilizer, the second leaf, the tip of the tip

(1) Ammonium sulfate 200 kg

(2) Potassium chloride 100 kg

The above is the fertilization formula of cold rice, the content is for reference only. The growers need to adjust to the natural environment, soil conditions and rice varieties. It is hoped that rice growers will find a suitable fertilization method to obtain the maximum planting benefits.

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