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A screening method for drought-tolerant, wide-ranging, suitable and stable-yielding wheat varieties

A screening method and variety technology, applied in the field of wheat planting, can solve the problems of easy deviation and long growth period of winter wheat, and achieve the effects of avoiding large fluctuations, accurate drought resistance, and improving total yield

Active Publication Date: 2017-08-11
WHEAT RES INST OF AGRI SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have certain limitations in the identification of drought resistance of wheat varieties, such as only measuring the drought resistance of a certain growth period, while the growth period of winter wheat is long; or more or less artificial water intervention in the process of drought resistance identification (drought Shed and moisture critical method), prone to bias

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) From 2011 to 2013, 8 dry-land wheat varieties were planted in the hilly and dry land of Yuebi Village, Dayang Town, Yaodu District, Linfen City, Shanxi Province for 3 consecutive years;

[0033] 2) The organic matter content of the planting plot is 10.1g / kg, the alkali-hydrolyzable nitrogen is 43.69mg / kg, the available phosphorus is 16.45mg / kg, and the available potassium is 132mg / kg, and the area of ​​the planting plot is 5×8m 2 , 3 plots were repeatedly planted for each variety;

[0034] 3) The test field is plowed once a year from August 5 to 10, sowed from September 28 to October 1, and 10kg / mu of pure nitrogen, 8kg / mu of phosphorus pentoxide, and 4kg / mu of potassium oxide are applied before sowing. 3% carbofuran granule 3kg / mu;

[0035]4) The tested varieties are all carefully selected, with plump grains, no diseased grains, a purity greater than 99.0%, and a clarity greater than 99%. The germination rate of each variety measured before sowing is higher than 90...

Embodiment 2

[0045] 1) From 2010 to 2012, 10 dryland wheat varieties were planted in the hilly dryland of Dongyi Village, Liujiayuan Town, Hongdong County, Linfen City, Shanxi Province for 3 consecutive years;

[0046] 2) The organic matter content of the planting plot is 10.9g / kg, the alkaline nitrogen is 56.93mg / kg, the available phosphorus is 18.53mg / kg, and the available potassium is 143.6mg / kg, and the area of ​​the plot is 6×8m 2 , repeat 4 times;

[0047] 3) The experimental field is plowed once a year on August 11-15, sowed on September 25-28, and 9.5kg / mu of pure nitrogen, 7kg / mu of phosphorus pentoxide, and 3kg of 3% carbofuran granule are applied before sowing / mu;

[0048] 4) The tested varieties are all carefully selected, with plump grains, no diseased grains, a purity greater than 99.0%, and a clarity greater than 99%. The germination rate of each variety measured before sowing is higher than 92.0%;

[0049] 5) Accurately calculate the sowing amount according to the thousa...

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Abstract

The invention discloses a method for screening drought-resistant, wide-ranging, suitable and stable-yield wheat varieties, which belongs to the field of wheat planting technology; the purpose is to provide a method for analyzing the yield of varieties and the inter-annual interval of yield components through continuous planting in the field under natural rainfall conditions. Variation, screening of dry land wheat varieties with strong drought tolerance, small inter-annual variation of yield, and good yield stability; the method of the present invention is the coefficient of variation of wheat yield and its composition under 3 kinds of rainfall year types that completely rely on natural precipitation C.V. To evaluate the drought resistance, wide adaptability and stable yield of varieties, through the coefficient of variation C.V. It reflects the degree of dispersion of the data, so as to eliminate the difference in the yield and its yield composition for only one year, and the identification reliability is high.

Description

technical field [0001] The invention discloses a method for screening drought-tolerant, wide-ranging, suitable and stable-yielding wheat varieties, belonging to the technical field of wheat planting. Background technique [0002] Dryland wheat plays an important role in my country's wheat production, with a planting area of ​​nearly 100 million mu, especially in Shanxi, Shaanxi, Gansu and other provinces. The dryland wheat planting area in Shanxi Province is more than 6 million mu, accounting for 2 / 3 of the total wheat planting area in the province, with an annual output of 800-1000 million kg of wheat. The abundance and shortage of dryland wheat directly affects the total wheat production in Shanxi Province. Dryland wheat in Shanxi Province belongs to rain-fed agriculture, without irrigation conditions, and the water required for growth depends entirely on precipitation during the growth period and soil water storage during the summer season. The annual rainfall in the win...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/04A01G1/00
Inventor 党建友裴雪霞闫翠萍王姣爱张晶张定一徐玉娟肖俊红郭亮虎
Owner WHEAT RES INST OF AGRI SCI
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