Method for improving Chinese wild rye biomass and seed yield of saline-alkali soil

A saline-alkali land and biomass technology, applied in botany equipment and methods, fertilization methods, horticulture, etc., can solve the problems of low biomass and seed yield of Leymus chinensis, improve the regional ecological environment, increase vegetation coverage, and reduce soil The effect of salt

Inactive Publication Date: 2013-04-03
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims to solve the technical problem of low biomass and seed yield of Leymus chinensis existing in saline-alkali land, thereby providing a method for increasing biomass and seed yield of Leymus chinensis in saline-alkali land

Method used

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  • Method for improving Chinese wild rye biomass and seed yield of saline-alkali soil
  • Method for improving Chinese wild rye biomass and seed yield of saline-alkali soil

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specific Embodiment approach 1

[0019] Specific embodiment one: a kind of method that improves saline-alkali land Leymus chinensis biomass and seed yield in the present embodiment is carried out according to the following steps:

[0020] 1. Turning green by fire: In the middle and late April, when the snow has melted and the ground is dry, use fire to burn the litter and leaves and grass residues on the saline-alkali land where Leymus chinensis grew in the previous year;

[0021] 2. Nitrogen addition: When Leymus chinensis grows to 10-15cm, add nitrogen at 5:00-7:00 in the evening. The amount of addition is 120-150 kg / ha of pure nitrogen, and the addition method is surface application;

[0022] 3. Timely irrigation: Irrigate 1-2 times a month, and the depth of each irrigation is 5-10mm; if the average rainfall is 2-3 times a month, each rainfall is 10-12mm, and the interval between two rainfalls is 10-15 days , there is no need for artificial irrigation;

[0023] 4. Seed harvesting: After the seeds are matu...

specific Embodiment approach 2

[0027] Specific embodiment two: the difference between this embodiment and specific embodiment one is: when Leymus chinensis grows to 10cm, nitrogen is added at 5 o'clock in the evening. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in Step 3, the watering depth is 10mm each time. Others are the same as in the first or second embodiment.

[0029] Test one: a kind of method that improves saline-alkali land Leymus chinensis biomass and seed production is to realize according to the following steps:

[0030] In 2010, in the Da'an Alkali Land Ecological Experiment Station of the Chinese Academy of Sciences (Honggangzi Township, Da'an City, Jilin Province, China), the moderately salinized Leymus chinensis grassland was tested according to the following method, and the test area was 150m 2 The basic physical and chemical properties of the soil are shown in Table 1.

[0031] 1. Turn green by fire: on April 15, when the snow has melted and the ground is dry, the litter and grass residues on the saline-alkali land where Leymus chinensis grew in the previous year are burned;

[0032] 2. Nitrogen addition: When Leymus chinensis...

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Abstract

The invention discloses a method for improving the Chinese wild rye biomass and seed yield of the saline-alkali soil, and relates to a method for improving the saline-alkali soil plant yield. The method for improving the Chinese wild rye biomass and seed yield of the saline-alkali soil aims to solve the technical problem of small Chinese wild rye biomass and seed yield of the traditional saline-alkali soil. The method for improving the Chinese wild rye biomass and seed yield of the saline-alkali soil comprises the following steps of: 1) burning and resuming growth; 2) adding nitrogen; 3) watering grassland; 4) collecting seeds; and 5) harvesting pastures. After the nitrogen is added, the Chinese wild rye is quickly accelerated to grow, the population height of the Chinese wild rye is improved by 33%, the population density is increased by more than two times, the dry Chinese wild rye yield is improved to 4.0-8.8 tons per hectare, and the yield is averagely increased by more than three times, the ear setting percentage is improved by 50.4-151.7%, and the seed yield is improved by more than 7.3 times. Meanwhile, the method has the characteristics that the grassland soil salinity is lowered, the soil fertility is improved, the vegetation coverage is improved, the grassland degeneration is inhibited, and the regional ecological environment is improved. The method is suitable for managing and maintaining the moderate and severe salinization Chinese wild rye grassland in the west part of Songnen plain.

Description

technical field [0001] The invention relates to a method for increasing the yield of plants in saline-alkali land. Background technique [0002] Leymus chinensis is a perennial rhizome-type high-quality forage grass. It has strong stress resistance, ecological persistence of cold resistance, drought resistance and salt-alkali resistance, high nutritional value and good palatability. It is liked by most livestock and has important ecological and economic value. Leymus chinensis is widely distributed in the eastern part of the Eurasian steppe, and in China, it is mainly distributed in the eastern part of the Inner Mongolia Plateau and the western part of the Songnen Plain. However, due to soil salinization and overgrazing, the biological yield of Leymus chinensis has decreased year by year, from 2.2-3.0 tons / ha in the 1950s to the current 0.7-0.9 tons / ha. The continuous decline of Leymus chinensis production not only limits the development of local animal husbandry and cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01C21/00
Inventor 黄立华粱正伟马红媛杨昊谕
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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