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One-time formula nitrogen application method for direct seeding rice in whole growth period

A full growth period, one-time technology, applied in fertilization methods, rice cultivation, fertilization devices, etc., can solve the problems of high labor cost and many times of fertilization, and achieve the effect of increasing yield and reducing labor costs.

Active Publication Date: 2021-02-09
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of the existing technology, a method of one-time formula nitrogen application in the whole growth period of direct-seeding rice is now provided to solve the problems of many times of fertilization and high labor cost in traditional rice cultivation

Method used

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  • One-time formula nitrogen application method for direct seeding rice in whole growth period
  • One-time formula nitrogen application method for direct seeding rice in whole growth period
  • One-time formula nitrogen application method for direct seeding rice in whole growth period

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Embodiment 1

[0043] refer to figure 1 , figure 1 It is a schematic diagram of the correlation between the leaves of the dry direct-seeding rice in Example 1 of the present invention, the duration of fully unfolded days and the release of fertilizers.

[0044] The variety of direct-seeding rice is Nanjing 9108, and the total number of leaves on the main stem of the rice under dry-seeding conditions is N=15, and the number of elongated internodes is n=5. The thousand-grain weight of the variety is 26.2g, and the expected basic seedlings are 80,000 basic seedlings per mu under dry direct seeding conditions. Before sowing, the seed germination and emergence tests are carried out. Among them, the seed germination rate measured in the previous stage is 90%, and the emergence rate under dry direct seeding conditions is 45%. %.

[0045] According to the corresponding relationship between the number of leaves from the main stem of rice and its critical period of growth and development, the number...

Embodiment 2

[0057] The rice variety of water-seeded rice is Nanjing 9108. Under the condition of water-seeded rice, the total number of leaves of the rice main stem is N=15, and the number of elongated internodes is n=5. The thousand-grain weight of the variety is 26.2g, and the basic seedlings are expected to be 80,000 basic seedlings per mu under the condition of water direct seeding. Before the seeds are sown, the seed germination and emergence test is carried out. Among them, the seed germination rate measured in the previous period is 90%, and the emergence rate under the water direct seeding condition is 60%. %.

[0058] According to the corresponding relationship between the number of leaves from the main stem of rice and its critical period of growth and development, the number of leaves extracted from the main stem and the number of days from the extraction to full expansion of a single leaf, the duration of the rice from sowing to the critical period of fertilization is calculate...

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Abstract

The invention provides a one-time formula nitrogen application method for direct seeding rice in a whole growth period. Compared with a traditional rice cultivation and planting method, the ne-time formula nitrogen application method for the direct seeding rice in the whole growth period has the advantages that the yield is increased through accurate sustained and controlled release fertilization,a fertilization formula and water and fertilizer management; and through one-time fertilization before sowing, the labor cost of fertilization is greatly reduced. The method solves the problems thattraditional rice cultivation is high in fertilization frequency and high in labor cost are solved.

Description

technical field [0001] The invention relates to the technical field of rice cultivation, in particular to a method for one-time formula nitrogen application in the whole growth period of direct-seeding rice. Background technique [0002] Direct-seeding rice generally refers to a rice farming method in which rice seeds are sown in the field manually or mechanically after the crops are harvested in summer, and the seedlings emerge directly. Rice direct seeding is suitable for large-scale and mechanized planting, and it is a labor-saving and cost-saving way of growing rice. [0003] Appropriate nitrogen fertilizer management is an important basis for high yield in direct-seeding rice production. Traditional nitrogen fertilizer management is often divided into base fertilizer applied before transplanting, tillering fertilizer to promote tillering, flower-promoting fertilizer to promote the differentiation of spikelets, and flower-preserving fertilizer to inhibit the degeneratio...

Claims

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Application Information

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IPC IPC(8): A01C21/00A01G22/22
CPCA01C21/005A01G22/22
Inventor 魏海燕张洪程刘国栋邢志鹏胡群许方甫蒋伟勤胡雅杰郭保卫高辉
Owner YANGZHOU UNIV