A screening method for high water-efficiency crop varieties in arid and semi-arid regions

Abstract

The invention discloses a method for screening high-water-efficiency crop varieties in arid and semi-arid areas, which belongs to the field of screening high-water-efficiency varieties in arid and semi-arid areas. Reduce the screening range of high water-efficiency varieties and reduce the error in the selection of high-water-efficiency varieties, so as to more accurately screen high-water-efficiency varieties, and in the process of primary screening and secondary screening, the water replenishment time and single water replenishment corresponding to the highest yield can be obtained. In order to plant the crops in the arid area, the best planting conditions are provided, so that the crops in the arid area can achieve high yield. At the same time, the ratio of the high water efficiency varieties (water replenishment output-rainfed output) and the amount of supplementary water can be calculated through the second calculation, so that in the Under the condition of ensuring a certain output, use the least amount of water replenishment, so as to achieve the effect of both output and water saving.

Description

technical field [0001] The invention relates to the field of screening high-water-efficiency varieties in arid and semi-arid areas, and more specifically relates to a screening method for high-water-efficiency crop varieties in arid and semi-arid areas. Background technique [0002] Water resources are scarce in arid or semi-arid areas, and different crops and varieties have differences in the degree of water resource utilization. Therefore, it is necessary to select species and varieties that use limited rainwater or irrigation water with high efficiency for planting, so that under the condition of limited water resources To ensure higher crop yields. For the screening of crops, it is generally judged whether the variety is a high-water-efficiency variety based on the survival of the crop under different water stresses or the amount of biomass. There are existing screening methods such as indoor and outdoor crop seedling drought stress cultivation, although it is possible t...

AI Technical Summary

Problems solved by technology

For the screening of crops, it is generally judged whether the variety is a high-water-efficiency variety based on the survival of the crop under different water stresses or the amount of biomass. There are existing screening methods such as indoor and outdoor crop seedling drought stress cultivation, although it is possible to screen out high water-efficiency. varieties, but there are errors in actual indicators such as the impact of drought on crop yields; under the same water conditions, different water supply times, water supply amounts, and water supply methods also have a great impact on crop survival, growth and development, and yield

Under irrigation conditions, different varieties of crops have different irrigation methods, interval irrigation time and water volume of single irrigation, which may lead to certain errors in the selected high water efficiency varieties, resulting in the selection of crop varieties with high water efficiency, but not. The effect of high water efficiency and high yield can be exerted under very low water consumption, resulting in the lack of more accurate screening methods for high water efficiency varieties of crops

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