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
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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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