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A high-efficiency application method of nitrogen fertilizer for double-cropping super rice nitrogen transfer and strong panicle

A technology of super rice nitrogen and application method, which is applied to the field of nitrogen fertilizer high-efficiency application of double-cropping super rice nitrogen to move later and strengthen ears, can solve problems such as failure to increase yield, insufficient nitrogen supply in later stages, and low nitrogen fertilizer utilization rate. , to achieve the effect of promoting balanced and coordinated development, reducing water eutrophication, and improving fertilizer utilization.

Active Publication Date: 2021-06-29
HUNAN SOIL & FERTILIZER INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large amount of nitrogen applied in the early stage, it is easy to lose with water or volatilize through digestion and reverse digestion, resulting in low nitrogen utilization rate, resulting in eutrophication of water bodies, increased greenhouse gas emissions, and polluted the environment.
Farmers did not adopt the appropriate phased application ratio according to the characteristics of different nitrogen requirements in different growth stages of super rice, resulting in excess nitrogen and waste of nutrients in the early growth stage of super rice, insufficient nitrogen supply in the later stage, and failure to achieve the effect of increasing ear size and full grain , which reduces the fertilizer production efficiency and cannot give full play to the production potential of super rice, which not only wastes fertilizer resources but also causes nitrogen non-point source pollution
[0004] Existing fertilization methods are the bottleneck for the development of the rice industry in a green and efficient direction

Method used

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  • A high-efficiency application method of nitrogen fertilizer for double-cropping super rice nitrogen transfer and strong panicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: A kind of high-efficiency application method of nitrogen fertilizer for double-cropping super rice nitrogen shifting and strengthening ears, such as figure 1 shown, including the following steps:

[0031] Step one, choose a good breed. The super early rice variety is Zhongzao 39, with a growth period of 112 days, sowing on March 25, transplanting on April 20, and maturity on July 15. The amount of seed used in the field is 5kg / mu. Hyou 518 is selected as a super late rice variety, with a growth period of 108 days, sowing on June 25, transplanting on July 18, and maturing on October 11. The field seed is 1kg / mu.

[0032] Step two, determine the amount of fertilizer. The soil fertility in the field is medium, and the super rice Zhongzao 39, according to the target yield of 500kg / mu, the amount of N application is determined to be 12kg / mu, N, P 2 o 5 、K 2 The application ratio of O is 1:0.4:0.5. For super rice Hyou 518, according to the target yield of ...

Embodiment 2

[0038] Embodiment 2: a kind of nitrogenous fertilizer efficient application method of double-cropping super rice nitrogen shifting back to strengthen ears, comprising the following steps:

[0039] Step one, choose a good breed. Zhuliangyou 819 was selected as a super early rice variety, with a growth period of 105 days. It was sown on March 27, transplanted on April 23, and matured on July 10. The amount of seed used in the field was 1.75kg / mu. The super late rice variety Shenyou 1029 is selected, with a growth period of 118 days, sowing on June 16, transplanting on July 13, and maturing on October 12. The seed used in field is 1kg / mu.

[0040] Step two, determine the amount of fertilizer. The soil fertility in the field is medium, and the super rice strain Liangyou 819, according to the target yield of 500kg / mu, the N application rate is determined to be 12kg / mu, N, P 2 o 5 、K 2 The application ratio of O is 1:0.4:0.5. For super rice Shenyou 1029, according to the target...

Embodiment 3

[0046] Embodiment 3: a kind of method for the high-efficiency application of nitrogen fertilizer of double-cropping super rice nitrogen moving backward and strengthening ears, comprising the following steps:

[0047] Step one, choose a good breed. The super early rice variety Liangyou 287 has a growth period of 107 days, sowed on March 26, transplanted on April 25, and matured on July 11. The amount of seed used in the field is 1.5kg / mu. Tianyou 998 is selected as a super late rice variety, with a growth period of 119 days, sowing on June 19, transplanting on July 15, and maturing on October 16. The seed used for field use is 1kg / mu.

[0048] Step two, determine the amount of fertilizer. The soil fertility in the field is medium, and the super early rice Liangyou 287, according to the target yield of 500kg / mu, the N application rate is determined to be 11kg / mu, N, P 2 o 5 、K 2 The application ratio of O is 1:0.4:0.5. Super late rice Tianyou 998, according to the target yi...

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Abstract

The invention discloses a high-efficiency application method of nitrogen fertilizer for double-cropping super rice by moving nitrogen behind to strengthen ears, relates to the field of crop cultivation technology, and solves the problems of excess nitrogen in the early stage of rice production and growth, waste of nutrients, and insufficient nitrogen supply in the later stage , the main points of the technical plan are: select double-cropping super rice varieties; determine the total amount of N, P, and K fertilizers; apply the ratio of super early rice base fertilizer, tillering fertilizer, ear fertilizer, and grain fertilizer N fertilizer to 6:3:1:0 , 5:3:2:0 or 5:3:1:1; the application ratio of super late rice basal fertilizer, tillering fertilizer, ear fertilizer, grain fertilizer and N fertilizer is 5:4:1:0 or 5:3:2:0 or 5:3:1:1; all P fertilizers are applied as base fertilizer; 60% of K fertilizer is applied as base fertilizer, and 40% is applied as panicle fertilizer, which has the potential to improve fertilizer use efficiency, promote the coordinated development of super rice panicle and grain, and exert the potential of super rice yield increase To provide technical support for the rice industry to develop in a green and efficient direction.

Description

technical field [0001] The invention relates to the technical field of crop cultivation, and more specifically relates to a method for efficiently applying nitrogen fertilizer for double-cropping super rice with nitrogen rearward shifting and ear strengthening. Background technique [0002] The development of super rice plays an important role in my country's food security. In the past five years, the planting area of ​​super rice in my country has stabilized at more than 130 million mu every year, accounting for about 30% of the rice planting area. In rice production, the production concept of "big fat wins high yield" has a long history. [0003] At present, in rice production, farmers are accustomed to adopt the "one shot" fertilization method, that is, heavy base, tillering, light ear, and grain fertilizer. Farmers are used to using nitrogen fertilizer as basal fertilizer and tillering fertilizer. Among them, the ratio of nitrogen fertilizer for early rice basal fertil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00A01G22/22
CPCA01C21/00A01G22/22
Inventor 郭立君肖小平程凯凯李超杨茜汪柯彭志红唐海明汤文光
Owner HUNAN SOIL & FERTILIZER INST