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Applying method of slow/controlled release nitrogen fertilizer during cultivation of cotton bred in feeding block

An application method and technology of nutrient pots, which are applied in the field of slow/controlled release fertilizers, can solve problems such as difficult to achieve, and achieve the effects of increasing the absorption range and quantity, facilitating balanced absorption, and improving nutrient utilization efficiency

Inactive Publication Date: 2014-07-30
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Theoretically, making all the roots absorb fertilizer nutrients is the best choice to improve fertilizer use efficiency and increase crop yield, but it is difficult to do in practice

Method used

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  • Applying method of slow/controlled release nitrogen fertilizer during cultivation of cotton bred in feeding block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1, the application method of slow / controlled release nitrogen fertilizer in the cotton cultivation of nutrient pot seedling cultivation, the technical scheme is as follows:

[0039] (1) The total amount of slow / controlled release nitrogen fertilizer converted into pure nitrogen per mu is 150 kg per hectare, of which 45 kg is used for seedling cultivation in nutrient pots (accounting for 30% of the total amount), and the remaining 105 kg is used for field use Cultivation (the amount used in the field is 70% of the total amount).

[0040] (2) Slow / controlled-release nitrogen fertilizers are used for nutrient pot seedlings. The sulfur primer with a controlled release period of 3 months plus polymer double-coated urea and the thermoplastic resin-coated urea with a controlled release period of 4 months are used at a ratio of 1: The mass ratio combination of 3; slow / controlled release nitrogen fertilizer for field use, sulfur coated urea with a controlled release per...

Embodiment 2

[0042] Embodiment 2, the application method of slow / controlled release nitrogen fertilizer in the cotton cultivation of nutrient pot seedling cultivation, the technical scheme is as follows:

[0043] (1) The total amount of slow / controlled release nitrogen fertilizer converted into pure nitrogen per mu is 180 kg per hectare, of which the amount used for seedling cultivation in nutrient pots accounts for 25% of the total amount, and the amount used in field is 75% of the total amount.

[0044] (2) Slow / controlled-release nitrogen fertilizers are used for nutrient pot seedlings. The sulfur primer with a controlled release period of 3 months plus polymer double-coated urea and the thermoplastic resin-coated urea with a controlled release period of 4 months are used at a ratio of 1: Combination of mass ratio of 1; slow / controlled release nitrogen fertilizer for field use, sulfur coated urea with a controlled release period of 3 months and sulfur primer with a controlled release per...

Embodiment 3

[0046] Embodiment 3, the application method of slow / controlled release nitrogen fertilizer in the cultivation of cotton seedlings raised in nutrient pots, the technical scheme is as follows:

[0047] (1) The total amount of slow / controlled release nitrogen fertilizer converted into pure nitrogen per acre of cotton is 160 kg per hectare, of which the amount used for seedling cultivation in nutrient pots accounts for 35% of the total amount, and the amount used in field is 65% of the total amount.

[0048] (2) Slow / controlled-release nitrogen fertilizers are used for nutrient pot seedlings. The sulfur primer with a controlled release period of 3 months plus polymer double-coated urea and the thermoplastic resin-coated urea with a controlled release period of 4 months are used at a ratio of 1: The mass ratio combination of 2; slow / controlled release nitrogen fertilizer for field use, sulfur-coated urea with a controlled release period of 3 months and sulfur primer layer with a con...

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Abstract

The invention relates to an applying method of a slow / controlled release nitrogen fertilizer during cultivation of cotton bred in a feeding block. The total consumption of the slow / controlled release nitrogen fertilizer is 150-180kg per hectare of cotton in the terms of pure nitrogen, wherein 25-40 percent of the slow / controlled release nitrogen fertilizer is used for breeding the cotton in the feeding block, and the balance of the slow / controlled release nitrogen fertilizer is used for field production; a combination of a slow / controlled release nitrogen fertilizer with a controlled release period of 3 months and a slow / controlled release nitrogen fertilizer with a controlled release period of 4 months is selected for being used in breeding of the feeding block and field production respectively; and the slow / controlled release nitrogen fertilizer for breeding of the feeding block is uniformly blended in nutrient soil during breeding of the cotton, and the slow / controlled release nitrogen fertilizer for the field production is uniformly spread on the surface of soil in a field before the cotton seedlings are transplanted, and is ploughed and buried. The slow / controlled release nitrogen fertilizer is applied by using the applying method, and thus the growth and development of the root system of the cotton can be promoted, and the utilization rate of the slow / controlled release nitrogen fertilizer is increased.

Description

technical field [0001] The invention relates to a method for applying slow / controlled release nitrogen fertilizer in cotton cultivation in nutrient bowl seedling cultivation, and belongs to the technical field of slow / controlled release fertilizer application. Background technique [0002] In recent years, my country's slow / controlled release fertilizer production technology research and development and industrialization have developed rapidly, with increasing varieties and rapidly increasing production capacity. The application of crops in agricultural production has become increasingly common and popular among farmers. Slow / controlled release nitrogen fertilizer is the main type of slow / controlled release fertilizer, accounting for more than 90% of the total slow / controlled release fertilizer in my country. [0003] Cotton is the main economic crop in my country, with more than 4 million hectares of cotton planted all year round, ranking first in the world in total product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00
Inventor 于淑芳杨力魏建林崔荣宗张玉凤董亮
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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