Compound regulator for defending spring freeze injury of wheat and method

Abstract

The invention relates to a compound regulator for defending freeze injury of wheat in spring and a method. The compound regulator is a solution containing 0.021g / L-0.11g / L of salicylic acid and 0.5g / L-1.0g / L of a surfactant. The compound regulator is uniformly sprayed to wheat leaves before 1-2 days of the freeze injury of the wheat in the spring. By utilizing a compound regulator solution, the resistance of wheat plants on the freeze injury in the spring can be remarkably enhanced, the freeze injury degree of young ears of wheat can be obviously decreased, and the yield of wheat grains can be increased. The compound regulator has a simple formula and easy for popularization and generalization, the raw materials are easily available, and an application method of the compound regulator is simple.

Description

technical field [0001] The invention belongs to the field of agricultural applied biotechnology, and in particular relates to a compound regulator and a method capable of defending wheat from freezing damage in spring. Background technique [0002] Wheat is one of the most important food crops in the world. Under the severe situation of growing population and decreasing arable land year by year, increasing the yield per unit area is the most important way to ensure the supply of wheat. Freezing injury is one of the most serious natural disasters in wheat production. In the United States, South Korea, Australia and other countries, the frequency of severe freezing injury is once every 2 to 4 years, resulting in a yield loss of 14% to 85%. my country's wheat planting area is wide, the north-south span is large, the terrain is changeable, the frequency of frost damage is more frequent, and the loss of wheat production is greater. The types of wheat freezing injury are mainly d...

AI Technical Summary

Problems solved by technology

[0004] In recent years, spring frost damage of wheat in my country has shown an intensified trend. The main reasons are: 1. Climate change factors: Although global warming has caused the average temperature to rise continuously, it has led to an increase in the inter-annual variation, and spring freeze damage and cold waves frequently occur, increasing 2. Variety breeding factors: Because wheat breeders increase the selection of early maturity (which can increase the grain filling time and improve yield) when breeding high-yielding wheat varieties, the Huanghuai winter wheat region In the 1950s and 1960s, the winter wheat varieties that were popularized and planted for production were gradually replaced by the semi-winter or weak wheat varieties that are more springy, faster in growth, earlier in flowering, better in yield and poor in frost resistance. 3. Cultivation and planting factors: Due to the low efficiency of wheat planting, farmers have extensive wheat planting and management, such as early sowing date, large sowing amount, poor soil preparation quality, etc., increasing the weakness of wheat. The ratio of seedlings to vigorous seedlings also increases the frequency of wheat spring frost damage

[0005] However, compared with the research on winter freezing injury of wheat, there are few researches on the protection of wheat spring freezing injury at present. In the practice of wheat production, there are no effective technical measures to reduce or protect wheat spring freezing injury