Pennisetum hybrid planting method and method for jointly producing marsh gas by using Pennisetum hybrid as raw material

A technology of hybrid pennisetum and planting method, which is applied in the field of combined production of biogas with hybrid pennisetum as biomass raw material, can solve the problems of planting, harvesting and systematic research on the production capacity of grass without energy, and achieves simple planting and management. Effect

Inactive Publication Date: 2012-03-28
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no systematic research on the planting, harvesting and production capacity of energy grass in China.

Method used

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  • Pennisetum hybrid planting method and method for jointly producing marsh gas by using Pennisetum hybrid as raw material
  • Pennisetum hybrid planting method and method for jointly producing marsh gas by using Pennisetum hybrid as raw material
  • Pennisetum hybrid planting method and method for jointly producing marsh gas by using Pennisetum hybrid as raw material

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Experimental program
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Effect test

Embodiment 1

[0026] Planting place: South China Agricultural University Base No. 1 Experimental Site in Zengcheng, Guangzhou:

[0027] 1. Planting of hybrid pennisetum:

[0028] (1) Soil preparation: Pennisetum hybrids have a well-developed root system and require a deep soil layer. Generally, 30cm deep plowing is best. Deep plowing in winter is best to ensure that the soil is loose. In March, rake the land to make a furrow, the width of the furrow is 4m, and a set of ditches is opened in the field to avoid water accumulation in the field. Transplant hybrid pennisetum in mid to late April.

[0029] (2) Reasonable dense planting: the planting row spacing and plant spacing of hybrid pennisetum are 120cm and 60cm respectively, and the corresponding density is 13889 plants / hm 2 . Use stems to sow, cut into sections every 2-3 nodes, bury them flat in the soil, and then cover them with soil. During the whole growth period of the plants, there is no basic application of phosphorus fertilizer,...

Embodiment 2

[0037] Planting place: South China Agricultural University Base No. 2 Experimental Site in Zengcheng, Guangzhou:

[0038] 1. Planting of hybrid pennisetum:

[0039] (1) Soil preparation: Pennisetum hybrids have a well-developed root system and require a deep soil layer. Generally, 30cm deep plowing is best. Deep plowing in winter is best to ensure that the soil is loose. In March, rake the land to make a furrow, the width of the furrow is 4m, and open the field ditch to avoid water accumulation in the field. Transplant hybrid pennisetum in mid to late April.

[0040] (2) Reasonable dense planting: the planting row spacing and plant spacing of hybrid pennisetum are 120cm and 60cm respectively, and the corresponding density is 13889 plants / hm 2 . Use stems to sow, cut into sections every 2-3 nodes, bury them flat in the soil, and then cover them with soil. During the whole growth period of the plants, there is no basic application of phosphorus fertilizer, no topdressing nit...

Embodiment 3

[0048] Planting place: South China Agricultural University Base No. 3 Experimental Site in Zengcheng, Guangzhou:

[0049] 1. Planting of hybrid pennisetum:

[0050] (1) Soil preparation: Pennisetum hybrids have a well-developed root system and require a deep soil layer. Generally, 30cm deep plowing is best. Deep plowing in winter is best to ensure that the soil is loose. In March, rake the land to make a furrow, the width of the furrow is 4m, and open the field ditch to avoid water accumulation in the field. Transplant hybrid pennisetum in mid to late April.

[0051] (2) Reasonable dense planting: the planting row spacing and plant spacing of hybrid pennisetum are 120cm and 60cm respectively, and the corresponding density is 13889 plants / hm 2 . Use stems to sow, cut into sections every 2-3 nodes, bury them flat in the soil, and then cover them with soil. During the whole growth period of the plants, there is no basic application of phosphorus fertilizer, no topdressing nit...

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Abstract

The invention discloses a Pennisetum hybrid planting method and a method for jointly producing marsh gas by using Pennisetum hybrid as a raw material. The planting method comprises the steps of: preparing a land: deeply plowing soil in winter, harrowing and ridging in March, keeping ridge width to be 4m, opening field ditches and transplanting the Pennisetum hybrid in the middle and last ten days of April; reasonably and densely planting: keeping the row spacing and the plant spacing of the Pennisetum hybrid to be respectively 120cm and 60cm, keeping the density to be 13889 plants / hm<2>, sowing seed roots, cutting the seed roots into sections with 2-3 nodes per each section, flatly burying the sections into the soil, covering the sections with the soil and conducting general management; and harvesting: using a machine for harvesting, leaving stubbles with depth being 10-15cm, setting cutting frequency to be once per three months and harvesting 3-4 times per year. By using the planting method to plant the Pennisetum hybrid and by controlling the production conditions, the growth time and the cutting frequency, the biomass per mu of the Pennisetum hybrid can be enabled to reach a higher level; and by using the obtained Pennisetum hybrid to produce the marsh gas, the cumulative gas output per mu can be enabled to reach a higher level and the coupling of the gas output and the biomass per mu of the raw material is enabled to reach an ideal state.

Description

Technical field: [0001] The invention belongs to the field of renewable energy utilization of biomass resources, and in particular relates to a method for planting hybrid pennisetum and a method for jointly producing biogas using hybrid pennisetum as biomass raw materials. Background technique: [0002] Pennsetum alopecuroides (L.) Spreng belongs to Poaceae Panicinae, Tribulia subfamily, Pennsetum genus, is an annual or perennial herb, and is an important herbage in tropical, subtropical and temperate regions. 140 species, most native to Africa. Pennisetum americanum×P.purpureum is a triploid hybrid bred with giant elephant grass and Pennisetum americanum as male and female parents respectively. It has the characteristics of fast growth, high grass yield, wide adaptability and resistance Strong reversibility and other characteristics, the development prospect is very broad. The plant height of hybrid pennisetum is about 3.5 meters, and the height can reach more than 4 mete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01B79/02A01D91/04C12P5/02
CPCY02E50/343Y02E50/30
Inventor 李连华孙永明李东孔晓英杨富裕李志兵甄峰袁振宏李颖杨改秀
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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