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Sweet potato special compound fertilizer suitable for potato area in middle and lower Yangtze River and application method thereof

A special technology for compound fertilizers and sweet potatoes, applied in fertilization methods, fertilizer mixtures, applications, etc., can solve problems such as inconsistent nutritional requirements, low total nutrient input, and insufficient potassium, and achieve fertilizer saving, good application effects, and simple application Effect

Inactive Publication Date: 2012-11-21
SHIKEFENG CHEM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to a survey of sweet potato production areas in the middle and lower reaches of the Yangtze River (④ Ning Yunwang, Zhang Yongchun, Zhu Ludan, etc. Nitrogen, phosphorus and potassium nutrient absorption and distribution characteristics of sweet potato [J], 2011, 27 (10: 71-74.), The pure nutrient amount of nitrogen, phosphorus and potassium applied per mu in the area where sweet potatoes are planted is 13.8 kilograms, and the ratio of nitrogen, phosphorus and potassium is 1:0.68:0.66 (n=172); the soil nitrogen, phosphorus and potassium nutrients are respectively 90.6mg.kg -1 , available phosphorus 10.5mg.kg -1 , available potassium 89.7mg.kg -1 (n=421); there are problems such as low total nutrient input, moderate soil nitrogen and phosphorus content, insufficient potassium, and the supply ratio of fertilizer nutrients to soil nutrients is inconsistent with the nutritional requirements of sweet potatoes, etc.

Method used

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  • Sweet potato special compound fertilizer suitable for potato area in middle and lower Yangtze River and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Configuration of special fertilizer:

[0018] Nitrogen—select urea, with a nitrogen N content of 46%, provided by the Nitrogen Fertilizer Factory of Nanjing Chemical Industry Group Corporation.

[0019] 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.

[0020] Phosphorus – Choose common calcium superphosphate, Phosphorus P 2 o 5 The content is 12%, provided by the Phosphate Fertilizer Plant of Nanjing Chemical Industry Group Corporation.

[0021] Potassium – Select Russian Potassium Sulphate, Potassium K 2 O content is 50%, provided by Shandong Jining Kangjia Fertilizer Industry Co., Ltd.

[0022] After mixing urea, ammonium dihydrogen phosphate, three-material calcium superphosphate, common calcium superphosphate, and Russian potassium sulfate in parts by weight of 21.7kg, 15.9kg, 22.4kg, and 40.0kg respectively, 100kg of special fe...

Embodiment 2

[0024] Implementation location: Jingmen, Hubei

[0025] Sweet potato variety: Xushu No. 22 (starch type)

[0026] Soil nutrient status: soil nitrogen N123.97mg.kg -1 , P 2 o 5 30.41mg.kg -1 , potassium K 2 O18.01mg.kg -1 .

[0027] Implementation effect: custom fertilization fertilizer input is 50kg / mu general-purpose compound fertilizer (15-15-15), adopts sweet potato special fertilizer (10-10-20) consumption of the present invention to be 40kg / mu (referring to Table 1).

[0028] The sweet potato special fertilizer of the present invention is applied as base manure, and will not be topdressing later on. After planting, the special fertilizer of the present invention is used to reduce nutrient input by 28.9% compared with customary fertilization, and the output increases by 12.8%.

[0029] Table 1

[0030]

Embodiment 3

[0032] Implementation location: Anhui Mingguang

[0033] Sweet potato variety: Sushu No. 8 (edible type)

[0034] Soil nutrient status: soil nitrogen N76.62mg.kg -1 , P 2 o 5 7.23mg.kg -1 , potassium K 2 O117.11mg.kg -1

[0035] Implementation effect: custom fertilization fertilizer input is 50kg / mu general-purpose compound fertilizer (15-15-15), adopts sweet potato special fertilizer (10-10-20) consumption of the present invention to be 50kg / mu (referring to Table 2).

[0036] The sweet potato special fertilizer of the present invention is applied as base manure, and will not be topdressing later on. After planting, the sweet potato special fertilizer consumption of the present invention is used to reduce by 11.1% compared with customary fertilization, and the output increases by 21.1%.

[0037] Table 2

[0038] kg / mu

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Abstract

The invention relates to a sweet potato special fertilizer, and particularly relates to a sweet potato special compound fertilizer suitable for potato areas in the middle and lower Yangtze River and an application method thereof. The special compound fertilizer is suitable for sweet potatoes planted in potato areas in the middle and lower Yangtze River, is mixed by inorganic substances containing nitrogen, phosphorus and potassium; the effective content of the nitrogen in the compound fertilizer is 10%; the effective content of the phosphorus is 10%; the effective content of the potassium is 20%; the mass ratio of the effective contents of the nitrogen (N), the phosphorus (P2O5) and the potassium (K2O) is 1:1:2. Compared with habitual fertilizer application, the application of the sweet potato special fertilizer of the invention can increase the yield of sweet potatoes by more than 15% when nutrient using amounts are same, and can save the fertilizer by more than 15% when the yield is basically same.

Description

technical field [0001] The invention relates to a special fertilizer for planting sweet potatoes, in particular to a special compound fertilizer for sweet potatoes suitable for the potato fields in the middle and lower reaches of the Yangtze River and its application method. Background technique [0002] The development of sweet potato in our country is facing a huge development opportunity. Sweet potato is a kind of food crop. The unique high-yield characteristic of sweet potato is a powerful supplement to my country's food security; sweet potato is also one of the preferred (biomass) energy crops in my country; Non-cultivated land resources such as hills, saline-alkali, barren beaches, and deserts (①Yan Liangzheng, Zhang Yulin, Wang Shiqiang, et al. Potential and distribution characteristics of bioethanol production from energy crops in China〔J〕. Chinese Journal of Agricultural Engineering, 2008, 24(5) : 213-216.). [0003] The growth of crops is inseparable from fertilize...

Claims

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Application Information

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IPC IPC(8): C05G1/00A01C21/00
Inventor 朱德进宁运旺张永春解永军石元亮
Owner SHIKEFENG CHEM IND