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Compound fertilizer special for flue-cured tobacco variety NC297 and preparation method and application of compound fertilizer

A technology of flue-cured tobacco varieties and compound fertilizer, which is applied in the agricultural field, can solve the problems of increasing the cost of fertilizer, reducing the utilization rate of fertilizers by the nutrient distribution ratio, and being disadvantageous, and achieving the effect of excellent agronomic character value.

Inactive Publication Date: 2015-10-07
INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, with the rapid development of flue-cured tobacco production, in the traditional planting mode, due to the lack of scientific guidance, tobacco farmers have unreasonable fertilizer types and nutrient ratios in production, which is manifested by some farmers applying unreasonable nitrogen fertilization, Insufficient potassium application, etc.
Tobacco farmers apply chemical fertilizers blindly, and the phenomenon of unreasonable nutrient distribution not only reduces the fertilizer utilization rate and increases the fertilizer cost, but also has a negative impact on the yield and quality of tobacco leaves. NPK compound fertilizer, but there is no specific NPK compound fertilizer for flue-cured tobacco variety NC297

Method used

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  • Compound fertilizer special for flue-cured tobacco variety NC297 and preparation method and application of compound fertilizer
  • Compound fertilizer special for flue-cured tobacco variety NC297 and preparation method and application of compound fertilizer

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The preparation method of special compound fertilizer for flue-cured tobacco variety NC297: It is made by drum steam granulation process, that is, 13-15 parts of ammonium nitrate, 16-18 parts of diammonium phosphate, 46-48 parts of potassium sulfate, and 33-35 parts Parts of diatomaceous earth are pre-crushed separately, then stirred and mixed, and then crushed into powder, and the mixed components are drum-granulated. The granulation process and conditions are as follows: add steam to the drum to mix the components of each elemental fertilizer. It is advisable for the powder to start to agglomerate. The roughly agglomerated powder is fed into the drying kiln for drying through the belt, and the temperature at the inlet of the drying kiln is controlled at 140°C. The powder is further granulated and dried in the drying kiln, and cooled by the cooling kiln. After passing through a 5-mesh sieve, the finished product is bagged, and the particles that are too large or too sma...

Embodiment 2

[0026] The preparation method of the special compound fertilizer of flue-cured tobacco variety NC297: same as embodiment 1.

[0027] For medium-fertility fields (grading standard is the second soil census), the application of nitrogen, phosphorus, potassium weight percent content is 7%, 7%, 21% fertilizer to prepare when transplanting, and the application rate is 65kg / 667m 2 , 7-10 days after transplanting and 15-20 days after transplanting, apply potassium nitrate 5kg and 14kg respectively as the first top dressing, and about 40 days after transplanting, apply potassium sulfate 16kg as the second top dressing.

Embodiment 3

[0029] The preparation method of the special compound fertilizer of flue-cured tobacco variety NC297: same as embodiment 1.

[0030] For low fertility fields (the grading standard is the second soil census), when transplanting, use nitrogen, phosphorus, potassium weight percent content as 7%, 7%, 21% fertilizer to prepare, and the application rate is 70kg / 667m 2 , 7-10 days after transplanting and 15-20 days after transplanting, apply potassium nitrate 5kg and 14kg respectively as the first top dressing, and about 40 days after transplanting, apply potassium sulfate 16kg as the second top dressing.

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Abstract

The invention discloses a compound fertilizer special for a flue-cured tobacco variety NC297 and a preparation method and application of the compound fertilizer. The compound fertilizer comprises, by weight, 6-8% of nitrogen, 6-8% of phosphorus and 18-24% of potassium. The compound fertilizer has the advantages that tobacco plants of the flue-cured tobacco variety NC297 planted by the aid of the compound fertilizer can grow well integrally, the topping plant heights can be increased by 9.69-12.50%, the numbers of remained leaves can be increased by 7.11-8.70%, and the lengths and the widths of leaves can be respectively increased by 4.96-8.38% and 3.61-9.39%; the disease resistance can be enhanced, the incidence of weather fleck can be decreased by 16-19.37%, and the incidence of brown spot can be decreased by 17.23-28.38%; the yield per mu can be increased by 10.96-17.83%, and the output value per mu can be increased by 13.30-21.35%; the first-class tobacco proportion can be increased by 14.46-15.05%.

Description

technical field [0001] The invention relates to the field of agricultural technology, in particular to a special compound fertilizer for flue-cured tobacco variety NC297 and its preparation method and application. Background technique [0002] The flue-cured tobacco variety NC297 is a hybrid F1 variety bred by the American Golden Leaf Seed Company in 1998. It was introduced from the United States in 2006 by Yunnan China Tobacco Industry Company. The plant type of NC297 is tower type, the leaf shape is oblong, the height of the topping plant is 103-136.38 cm, the number of effective leaves after topping is 26, and the remaining leaves are 20-22. The waist leaves are 56.97-71.75 cm long and 20-30 cm wide cm, pitch 3.39-4.88 cm, stem circumference 9.25-11.22 cm. Strong drought resistance, strong growth at seedling stage, slightly weak growth in the early stage of field growth, strong growth 50 days after planting, delicate leaf color, neat growth in groups, slightly thinner m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G1/00
Inventor 杨景华王建新罗华元杨应明鲁耀陈拾华周敏邹炳礼周绍松段宗颜张忠武朱海滨董石飞饶智李觅李伟陈初
Owner INST OF AGRI ENVIRONMENT & RESOURCES YUNNAN ACAD OF AGRI SCI