Rice ridge culture salt-avoiding water-saving planting method of severe soda saline-alkali soil

A technology of soda saline-alkali land and planting method, which is applied in the field of crop planting, can solve the problems of low survival rate of rice planting, and achieve the effects of expanding the effective cultivated land area, increasing the survival rate, and lowering the cost

Inactive Publication Date: 2012-06-13
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a method for planting rice in ridges to hide salt and save water in severe soda saline-alkali land, which solves the problem of low survival rate of rice planting in soda saline-alkali areas

Method used

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  • Rice ridge culture salt-avoiding water-saving planting method of severe soda saline-alkali soil
  • Rice ridge culture salt-avoiding water-saving planting method of severe soda saline-alkali soil
  • Rice ridge culture salt-avoiding water-saving planting method of severe soda saline-alkali soil

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Comparison scheme
Effect test

experiment example 1

[0028] The invention relates to a planting method of ridge farming and avoiding salt water rice. see figure 1 Experimental research on the change of salinity level in different positions of ridges (furrow 1, ridge platform 2, and ridge waist 3). Experimental time and place: May 20, 2011, soda saline-alkali at the Da'an Alkaline Land Ecological Experiment Station of the Chinese Academy of Sciences On the meadow, after fertilization, rotary tillage, ridge building, field soaking, drainage, and seedling transplanting, in-situ soil acquisition is carried out from different positions of the ridge (ridge furrow 1, ridge platform 2, ridge waist 3) at different growth stages of rice , the depth of soil sampling was 10 cm, so as to detect the pH and electrical conductivity (EC) of the saturated mud. Study the salinity and alkalinity changes in different positions of the ridge. See the experimental results figure 2 , image 3 , the results showed that: through ridge cultivation ex...

Embodiment 1

[0030] The ridge-growing rice of the present invention is tested on the severe soda saline-alkali land with 8.5 2 . Time and place: May 20, 2011, on the soda saline-alkali meadow at the Da'an Alkali Land Ecological Experiment Station of the Chinese Academy of Sciences. The test steps are as follows:

[0031] 1) Add desulfurized gypsum:

[0032] Sprinkle desulfurized gypsum on the heavy soda saline-alkali ground, and apply 400 kg of desulfurized gypsum to each plot.

[0033] 2) Apply farmyard manure:

[0034] Evenly mix the drug water enemy (25% triphenyltin acetate wettable powder) in the farmyard manure, and apply 24 g per plot. Sprinkle the farmyard manure applied with the medicine evenly into the experimental plot.

[0035] 3) Turn over the ground:

[0036] Rotary tillage was carried out with a rotary tiller to a depth of 20 cm.

[0037] 4) Build ridges:

[0038] Mechanical construction. The height of the ridge is 30 cm, and the distance between the ridges is 55 cm....

Embodiment 2

[0045] The ridge-growing rice of the present invention is tested on the severe soda saline-alkali land with 9.52 . Time and place: May 20, 2011, on the soda saline-alkali meadow at the Da'an Alkali Land Ecological Experiment Station of the Chinese Academy of Sciences. The test procedures include adding desulfurized gypsum, applying farmyard manure, plowing, building ridges, soaking and draining the fields, and transplanting rice seedlings.

[0046] After investigation and research on the survival rate, tillering rate and yield of rice in different growth stages, it was found that the survival rate of ridge-grown rice seedlings exceeded 91%, the tillering rate exceeded 93%, and the yield at the mature harvest stage was 9500 kg / hm 2 ~10500 kg / hm 2 .

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Abstract

The invention provides a rice ridge culture salt-avoiding water-saving planting method of severe soda saline-alkali soil. The characteristic that pH value and EC of the position of a ridge waist of a severe soda saline-alkali area are the lowest is utilized, rice seedlings are transplanted at the position of the ridge waist, damage of salt to rice root systems is avoided, and the environment suitable for normal growth of rice is created. The rice ridge culture salt-avoiding water-saving planting method of the severe soda saline-alkali soil solves the problems that the rice planting survival rate of the severe soda saline-alkali soil is low, growth of the rice is subjected to saline and alkaline limitation, and the like. The rice ridge culture salt-avoiding water-saving planting method of the severe soda saline-alkali soil is low in cost, reduces harrowing measures, improves soil, increases ground temperature, expands effective ploughing area, and is of great importance for increasing rice yield.

Description

technical field [0001] The invention provides a method for ridge-growing rice, in particular discloses a method for ridge-growing rice in heavily soda saline-alkali land, avoiding salt and saving water, and belongs to the technical field of crop planting. Background technique [0002] The area of ​​soda saline-alkali land in China's inland ranks third in the world, and the area of ​​soda saline-alkali land in the western Songnen Plain has reached 373 hm 2 . The soil in soda saline-alkali soil is strongly alkaline, and the salt composition is dominated by soda (NaHCO 3 with Na 2 CO 3 ), the soil characteristics are different from coastal neutral saline soil, with pH mostly above 8.5, severe saline-alkali soil pH > 9.5, saturated extract solution ECe > 10dS / m, sodium alkalinity ESP > 50%. In areas with severe soda salinity, there are large areas of saline-alkali wasteland, and it is impossible to grow rice that is not tolerant to saline-alkali. In the soda saline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G16/00A01G7/00A01G22/22
Inventor 王志春祝明炜赵长巍徐路王云贺魏博微
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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