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High-yield cultivation method for alfalfa in semi-arid region

A technology of alfalfa and its cultivation method, which is applied in the field of high-yield cultivation of alfalfa in semi-arid areas, can solve the problems of low survival rate, low emergence rate, and endangering the survival of alfalfa seedlings, so as to promote early nodulation, suppress field weeds, Significant effect of increasing production

Inactive Publication Date: 2016-06-15
HIGH LATITUDE CROPS INST TO SHANXI ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sowing alfalfa in spring is conducive to its rooting, but dryness and strong wind in spring have become the key factors that endanger the survival of alfalfa seedlings. Traditional alfalfa planting methods are difficult to solve the problems of low emergence rate and survival rate in the spring planting process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Location: Dongwangzhuang Village, Shuibosi Township, Datong City, Shanxi Province, with an altitude of 1050m, an annual average rainfall of 370-460mm, and an evaporation rate of 1876mm. The strong evaporation period is in spring and autumn, with an annual average temperature of 7.0°C and a frost-free period of 138 days.

[0021] 1. Selection of improved varieties: Use high-yield varieties that are drought-resistant, salt-alkali-resistant, and suitable for the local area, such as Ju Neng Salt Tolerant, Ju Neng 2, and Zhonglu 1.

[0022] 2. Preparation of rhizobia bacteria liquid: activate the strain of Sinorhizobium meliloti and cultivate to the OD of the bacteria liquid 600 The value is 0.5-0.8, and it is reserved.

[0023] 3. Seed dressing: Soak alfalfa seeds in the bacterial solution for 15-30 minutes and sow immediately.

[0024] 4. Preparation of the sowing site: Before sowing, it is necessary to prepare the ground carefully, remove weeds, plow 25-30cm deep, withou...

Embodiment 2

[0031] Location: Maozao, Huairen County, Xinzhou City, Shanxi Province, with an altitude of 1070m, an average annual rainfall of 350-470mm, and an evaporation rate of 1800mm. The strong evaporation period is in spring and autumn, the annual average temperature is 7.3°C, and the frost-free period is 135 days.

[0032] 1. Selection of improved varieties: Use high-yield varieties that are drought-resistant, salt-alkali-resistant, and suitable for the local area, such as Ju Neng Salt Tolerant, Ju Neng 2, and Zhonglu 1.

[0033] 2. Preparation of rhizobia bacteria liquid: activate the strain of Sinorhizobium meliloti and cultivate to the OD of the bacteria liquid 600 The value is 0.5-0.8, and it is reserved.

[0034] 3. Seed dressing: Soak alfalfa seeds in the bacterial solution for 15-30 minutes and sow immediately.

[0035] 4. Preparation of the sowing site: Before sowing, it is necessary to prepare the ground carefully, remove weeds, plow 25-30cm deep, and there is no obvious r...

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Abstract

The invention discloses a high-yield cultivation method for alfalfa in a semi-arid region. Spring seed sowing and dressing, precision strip cropping, quantitative fertilization and total membrane coverage are integrated. The method comprises the specific steps that during seed sowing in spring, alfalfa seeds are soaked in a rhizobium solution for 15-30 min, then, ditching is performed immediately for seed sowing, and calcium superphosphate is used for a base fertilizer to be applied at a time; then, four rows of alfalfa seeds are sown in each strip, total ground coverage is performed through a plastic film with the width being 120 cm and the thickness being 0.08 mm, the sowing line spacing is 15 cm, the sowing depth is 1.5 cm, and the seeding rate is 25 kg / hm<2>; then, soil is used on the edge of a ground membrane for fixed pressing so as to prevent the membrane from being damaged by wind, holes are punched every other about 50 cm on the ground membrane when seedlings grow 2 cm above the ground so as to prevent the seedlings from being burnt; the covered ground membrane is removed when stubble plants grow to be 10 cm high. According to the method, water evaporation caused by wind erosion can be obviously lowered, low temperature is increased, and the emergence rate of alfalfa seedlings inside the first year and the late biological yield are increased.

Description

technical field [0001] The invention relates to the technical field of alfalfa cultivation, in particular to a high-yield cultivation method for alfalfa in a semi-arid area. Background technique [0002] The northeastern edge of the Loess Plateau and the intersection zone of the Taihang Mountains is the northern boundary of the agricultural-pastoral ecotone in northern my country and the lower limit of rainfed agriculture, and is a typical ecologically fragile area. Its climate belongs to the arid continental monsoon climate, with an average annual precipitation of about 400mm. Spring is a period of strong evaporation, and the water loss is relatively large, which is not conducive to the emergence and growth of spring-sown crops. [0003] Alfalfa is an excellent perennial leguminous forage. The plant not only has high protein, but also uses its efficient nitrogen fixation ability to fertilize the soil and improve the ecological environment. In recent years, with the develop...

Claims

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Application Information

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IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 梁秀芝郑敏娜韩志顺薛龙飞王娟李荫藩康佳惠杨富王雁丽李占成
Owner HIGH LATITUDE CROPS INST TO SHANXI ACADEMY OF AGRI SCI
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