Planting method for preventing and treating verticillium wilt of alfalfa

Abstract

The invention discloses a planting method for preventing and treating verticillium wilt of alfalfa, and belongs to the technical field of forage grass planting.According to the planting method, seed germination accelerating and sterilization are carried out before sowing.The planting method is characterized in that a treatment method includes the steps of firstly, presoaking, wherein screened seeds are presoaked for 2-3 h with a 30-45 DEG C warm salt solution and then put into 55 DEG C warm water to be soaked for 15 min; secondly, ultrasonic treatment, wherein the presoaked seeds are subjected to ultrasonic oscillation for 15-30 min; thirdly, cooling, wherein the seeds obtained after ultrasonic treatment are transferred into cold water to be cooled to the room temperature and then air-dried; fourthly, seed sealing, wherein the cooled and air-dried seeds are completely wrapped with byssus to be sealed for 10-15 h so that moisture in the seeds can be redistributed; fifthly, seed dressing, wherein seed dressing is carried out with an agent compound prepared from 50% benomyl wettable powder, gibberellin, attapulgite and bean straw powder.The planting method has the advantages that as the seeds are sown after being treated, the emergence rate reaches 97% or above, the incidence rate is not higher than 7%, and especially the incidence rate of verticillium wilt is not higher than 1.5%.

Description

technical field [0001] The invention relates to a planting method for preventing and treating alfalfa diseases, belonging to the technical field of forage planting, in particular to a planting method for preventing and controlling alfalfa verticillium wilt. Background technique [0002] Alfalfa is a perennial leguminous forage. Because of its strong stress resistance and wide adaptability, it can grow in various climates and soil environments. Therefore, alfalfa is the most widely distributed cultivated forage in the world today. Alfalfa prefers dry, warm, sunny, less rainy climates and dry, loose, well-drained, calcium-rich soils. According to planting experience and research analysis, the optimum temperature for alfalfa is 25-30°C, and the annual rainfall is 400-800mm. If it exceeds 1000mm, the growth will be poor. In areas where the annual rainfall is less than 400mm, it needs irrigation conditions to grow vigorously. Alfalfa is suitable for planting on neutral to slight...

AI Technical Summary

Problems solved by technology

Due to its strong adaptability, alfalfa will not appear the phenomenon of no seedlings under cultivation, but the yield and quality will be significantly affected, especially serious diseases, such as powdery mildew, downy mildew, Verticillium wilt, etc. The incidence rate increases

However, the most commonly used method at present is to spray chemical agents for prevention and control when the disease occurs. Although it can play a significant role, the problem of repeated disease will appear.

The reason is that when the disease occurs, the pests can be killed by spraying pesticides on the page, but some pests reproduce underground, and the eggs in the soil cannot be completely killed, which leads to the phenomenon of repeated diseases