Fertilizer special for sweet potato planted in coastal saline and alkaline land and application thereof

A special fertilizer for sweet potato and a technology for saline-alkali land, applied in the fields of application, fertilization methods, fertilization devices, etc., can solve the problems of no products, etc., and achieve the effect of simple application and good application effect

Inactive Publication Date: 2011-11-23
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on the special fertilizer for sweet potatoes

Method used

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  • Fertilizer special for sweet potato planted in coastal saline and alkaline land and application thereof
  • Fertilizer special for sweet potato planted in coastal saline and alkaline land and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The inorganic substances that can be selected when configuring special fertilizers are:

[0020] Nitrogen—select urea, with a nitrogen N content of 46%, provided by the Nitrogen Fertilizer Factory of Nanjing Chemical Industry Group Corporation.

[0021] Nitrogen—Choose ammonium dihydrogen phosphate, with a nitrogen N content of 18%, provided by the Phosphate Fertilizer Factory of Nanjing Chemical Industry Group Corporation.

[0022] Phosphorus - choose ammonium dihydrogen phosphate, phosphorus P 2 o 5 The content is 48%, provided by the Phosphate Fertilizer Factory of Nanjing Chemical Industry Group Corporation.

[0023] Phosphorus - choose three materials superphosphate, phosphorus P 2 o 5 The content is 46%, provided by the Phosphate Fertilizer Plant of Nanjing Chemical Industry Group Corporation.

[0024] Phosphorus – Choose common calcium superphosphate, Phosphorus P 2 o 5 The content is 12%, provided by the Phosphate Fertilizer Plant of Nanjing Chemical Indu...

Embodiment 2

[0028] Implementation time: 2010

[0029] Implementation site: Jiangsu Dongtai Yellow Sea Original Seed Farm

[0030] Soil nutrient status of the implementation site: alkaline hydrolyzed nitrogen 93.2mg.kg -1 , available phosphorus 8.0mg.kg -1 , available potassium 74.1mg.kg -1

[0031] Sweet potato variety: Xushu No. 22 (starch type)

[0032] General-purpose compound fertilizer, provided by Shandong Lanxiang Shikefeng Chemical Co., Ltd., in the general-purpose compound fertilizer, the effective content of N is 15%, phosphorus P 2 o 5 The effective content is 15%, potassium K 2 The effective content of O is 15%.

[0033] Special fertilizer is provided by embodiment 1.

[0034] In the test, the control group used general-purpose compound fertilizer, and the input of general-purpose compound fertilizer was 50kg / mu; the experimental group used special fertilizer, and the input of special fertilizer was 40kg / mu, reducing nutrient input by 28.9%. The test results are shown ...

Embodiment 3

[0039] Implementation time: 2010

[0040] Implementation location: Jiangsu Xinyang Farm

[0041] Soil nutrient status of the implementation site: alkaline hydrolyzed nitrogen 34.0mg.kg -1 , available phosphorus 3.9mg.kg -1 , available potassium 278.0mg.kg -1 .

[0042] Sweet potato variety: Xushu No. 22 (starch type)

[0043] The general-purpose compound fertilizers and special fertilizers used by the control group and the experimental group and the amount per mu are all the same as in Example 2 in this embodiment. The test results are shown in Table 2.

[0044] Table 2 Implementation Effect of Special Fertilizer (2)

[0045]

[0046] It can be seen from Table 2 that the application of special fertilizer can increase the unit yield by 11.2%.

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Abstract

The invention relates to a fertilizer special for sweet potato planted in a coastal saline and alkaline land. Available nutrients in the special fertilizer are nitrogen, phosphorus and potassium. The fertilizer is characterized by being prepared by mixing inorganic substances containing nitrogen, phosphorus and potassium, wherein in the special fertilizer, the effective content of N is 12 percent, the effective content of P2O5 is 16 percent, the effective content of K2O is 12 percent, and the mass ratio of N to P2O5 to K2O is 3:4:3. The fertilizer as a base fertilizer is applied at one time, and the application amount per acre is 40-50 kilograms.

Description

technical field [0001] The invention relates to a special fertilizer for sweet potatoes based on coastal saline-alkali land and its application. Background technique [0002] my country's coastal saline-alkali tidal flat area is about 45 million mu, of which Jiangsu accounts for more than 1 / 4. Different from the gradual decrease of cultivated land area, the coastal tidal flat area is gradually expanding, which is an important reserve land resource. Saline-alkali soil has a high content of basic ions and pH value. Coastal saline-alkali soil generally contains more sodium ions and chloride ions, and the pH value is generally around 8.5. The osmotic pressure of the soil solution is high. Through the absorption of crop roots Function-forming stress affects crop growth. [0003] Saline-alkali soil contains less nitrogen, phosphorus, and more potassium, which are absorbed by crops. For example, the alkali-hydrolyzable nitrogen of tidal flat soil newly reclamated by Jiangsu Xinya...

Claims

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Application Information

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IPC IPC(8): C05G1/00A01C21/00
Inventor 宁运旺张永春马洪波汪吉东张辉许仙菊曹炳阁朱绿丹
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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