Asexual propagation and culture technique for medium-sized pennisetum alopecuroides

A medium-sized pennisetum, asexual reproduction technology, applied in horticulture, botanical equipment and methods, gardening tools/equipment, etc., can solve the problems of low seedling emergence rate, difficult reproduction, etc., achieve high survival rate, improve survival rate, improve The effect of reproductive rate

Inactive Publication Date: 2011-09-28
LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a medium-sized Pennisetum vegetative propagation cultivation technique that can rapidly increase the propagation speed, aiming at the existence of medium-sized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] at 15m 2 Take the plot area as an example, the site conditions: farmland soil for general cultivation, the soil particle size is 0.6cm, the moisture content of the cultivation layer is 35%, and the surface temperature is 15°C;

[0022] 1. Asexual reproduction

[0023] (1) Stem cutting propagation:

[0024] Transplanting is carried out in late April every year; cut the middle and lower part of the plant with a stem node spacing of less than 15cm into 15cm stem segments, soak in 200PPm α-naphthaleneacetic acid solution for 4 hours before cutting, and cut the stem after soaking in α-naphthaleneacetic acid solution Transplanted to the field, the cuttage stem section adopts inclined plane incision, and the distance between transplanting plants is 5cm, and the row spacing is 50cm.

[0025] (2) Cultivation management

[0026] Topdressing nitrogen fertilizer 225g at seedling stage, topdressing ammonium phosphate compound fertilizer 168.75g at tillering and jointing stage. L...

Embodiment 2

[0028] at 15m 2 Take the plot area as an example, the site conditions: farmland soil for general cultivation, the soil particle size is 0.2cm, the moisture content of the cultivation layer is 40%, and the surface temperature is 30°C;

[0029] 1. Asexual reproduction

[0030] (1) Stem cutting propagation:

[0031] Transplanting is carried out in late April every year; cut the middle and lower part of the plant with a stem node spacing of 15-20cm into 20cm stem segments, soak in 200PPm α-naphthaleneacetic acid solution for 4 hours before cutting, and soak the stem segments of α-naphthaleneacetic acid solution The cuttings are transplanted to the field, and the stems of the cuttings are cut on an inclined plane, and the distance between plants and rows is 10 cm and the distance between rows is 80 cm.

[0032] (2) Cultivation management

[0033] Topdress nitrogen fertilizer 225g in the turning green stage, and topdress ammonium phosphate compound fertilizer 168.75g in the tille...

Embodiment 3

[0035] at 15m 2 Take the plot area as an example, the site conditions: farmland soil for general cultivation, the soil particle size is 0.4cm, the moisture content of the cultivation layer is 40%, and the surface temperature is 22°C;

[0036] (1) Root-divided transplanting and propagation: medium-sized pennisetum has a strong tillering ability, and generally each plant can reach more than 45 to 50 tillers. Divide the tiller roots into individual roots, and transplant them respectively at a plant-to-plant spacing of 5 cm and a row spacing of 80 cm;

[0037] (2) Cultivation management

[0038] Topdressing nitrogen fertilizer 225g at seedling stage, topdressing ammonium phosphate compound fertilizer 168.75g at tillering and jointing stage. Later, after grazing, 225g of nitrogen fertilizer and 168.75g of ammonium phosphate compound fertilizer were applied again. Pay attention to thinning at the seedling stage, and pay attention to loosening the soil and removing weeds after emer...

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Abstract

The invention discloses an asexual propagation and culture technique for medium-sized pennisetum alopecuroides and relates to the technical field of introduction, domestication and culture of wild pennisetum alopecuroides. The asexual propagation and culture technique for the medium-sized pennisetum alopecuroides consists of an asexual propagation part and a culture management part and is completed according to the following steps of: A, performing asexual propagation which comprises root transplanting propagation and stem segment cuttage propagation; and B, performing culture management, wherein a nitrogenous fertilizer is applied at the seedling stage or in the period of seedling establishment, thinning is carried out at the seedling stage, scarification is carried out and weeds are removed after seedlings emerge in the first year, an ammonium phosphate composite fertilizer is applied at the tillering and jointing stage, the nitrogenous fertilizer and the ammonium phosphate composite fertilizer are applied supplementally after the pennisetum alopecuroides is mowed and grazed, and the pennisetum alopecuroides is mowed and utilized at the initial stage of earing and harvested at the mature stage at the end of October. The problems of a low maturing rate, a low emergence rate, propagation difficulty and the like in the actual production of the medium-sized pennisetum alopecuroides and other wild species of pennisetum alopecuroides are solved. The propagation speed of the medium-sized pennisetum alopecuroides can be rapidly improved. The technical support and the guarantee are provided for large-scale popularization and application of the species in the western region of China.

Description

technical field [0001] The invention relates to the introduction, domestication and cultivation technology of wild pennisetum, in particular to the asexual propagation and cultivation technology of medium-sized pennisetum. Background technique [0002] Medium Pennisetum ( Pennisetum longissimum ) originated in Kunming, Yunnan, and was introduced to Lanzhou, Gansu in 1991. It was introduced and domesticated at the Dawashan Experimental Base of the Lanzhou Institute of Animal Husbandry and Veterinary Medicine, Chinese Academy of Agricultural Sciences, and regional experiments were carried out in Tianshui, Qinwangchuan and other regions in Gansu. The grass species is a perennial sparse cluster type, tall grass, and the fibrous root system has transverse rhizomes. Stem erect, 120-185 cm high, usually 8-10 nodes, 6-8 leaves per stem. The leaves are linear, 10-50 cm long and 6-12 mm wide. Spike panicle, columnar, spike length 13-20 cm, width 5-8 mm (except bristles), infloresce...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G7/00
Inventor 张怀山
Owner LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
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