Asparagus: How to Handle Severe Weather Source: Hebei Science and Technology News Asparagus is a perennial herb that thrives in a wide range of climates, growing well between 20° and 60° latitude. However, achieving high yield and quality requires optimal environmental conditions. To support asparagus farmers, the following technical measures have been developed to manage severe weather events effectively. **First, Disaster Relief** **(I) Impact of Disasters** Excessive rainfall during summer and autumn can lead to waterlogging in asparagus fields. This creates poor soil aeration, which hinders root respiration and increases the risk of root rot. At the same time, high temperatures and excessive evaporation can cause physiological water stress in the above-ground stems, leading to yellowing and wilting. This weakens the plant's overall health, increasing the likelihood of stem blight, which may result in plant death or significant yield loss in the following season. **(II) Preventive Measures** 1. Plant asparagus in well-drained sandy loam soils with elevated terrain to prevent water accumulation. 2. Improve irrigation and drainage systems by constructing ditches to ensure quick removal of excess water after rain. **(III) Post-Disaster Measures** 1. After heavy rains, loosen the soil to improve permeability and reduce waterlogging. 2. Apply fungicides regularly—once every 7 days, especially after rain. Focus on spraying the lower stems using a mixture such as 50% Dazem 400 times diluted or 50% Dazem + 70% mancozeb 300 times. 3. Increase potassium fertilizer application to strengthen the plant’s resistance to diseases. **Second, Drought Management** **(I) Impact of Disasters** Asparagus has a shallow root system with limited water absorption capacity. During droughts, especially during the harvest period, the tender shoots become thin and difficult to harvest. This leads to more hollow or deformed shoots, increased aging, and reduced yield and quality. **(II) Preventive Measures** Water the field when soil moisture drops below 16%. To prevent spring drought, ensure adequate watering after the above-ground stems die back in winter, preparing the plants for the next growing season. **(III) Post-Disaster Measures** During the vegetative growth phase, especially when photosynthesis is disrupted due to weather conditions, timely irrigation is essential to maintain plant health and productivity. **Third, Wind Damage** **(I) Impact of Disasters** The tall above-ground stems of asparagus, often over 1.5 meters, are prone to lodging during strong winds, which can damage the plant and hinder its development. **(II) Preventive Measures** 1. Install 1.5-meter-high stakes between rows and tie two ropes at 70–80 cm height. Place the main stem between the ropes to prevent it from falling. 2. Select strong, thick stems (over 1 cm in diameter, 1.4–1.6 m tall) to ensure stability. **(III) Post-Disaster Measures** Remove fallen plants and re-level the ridges to promote healthy regrowth. **Fourth, Locust Infestations** **(I) Impact of Disasters** Locust attacks can cause extensive damage, creating wounds that weaken the plant and make it more susceptible to infections. **(II) Preventive Measures** Strengthen monitoring and implement proactive control measures to prevent large-scale infestations. **(III) Post-Disaster Measures** Apply fungicides promptly to prevent disease spread. A solution of 600 times diluted manganese-zinc-manganese or 500 times diluted carbendazim can be used, sprayed once every 7 days for three consecutive applications. By implementing these strategies, farmers can better protect their asparagus crops from various weather-related challenges, ensuring healthier plants and more consistent yields.

Feed Enzymes

Feed additive enzymes Simple classification of feed enzymes:

1.endogenous enzymes, refers to the animal body can secrete digestive enzymes, the main function is to digest the nutrients in the feed used to improve the digestibility of feed; The digestive system of young animals is not perfect, and the digestive enzymes secreted by the body are insufficient. In particular, a large amount of endogenous enzymes should be added to the feed based on plant raw materials to solve the digestive problems. Endogenous enzymes generally refer to protease, amylase, lipase and so on.

2. Exogenous enzymes refer to the enzyme preparations that animals cannot secrete autonomously and must be added. The main function is to degrade the anti-nutrient factors of plant raw materials, non-starch polysaccharides that hinder the release of nutrients and react with the contact of endogenous enzymes, such as cell walls, and non-starch polysaccharides that bring negative effects; Common are phytase, xylanase, glucanase, cellulase, mannanase, galactosidase, etc.

3.functional enzymes, mainly use its catalytic function to achieve the processes and products we need, such as glucose oxidase, a brief overview is the catalytic process with glucose to consume oxygen, produce gluconic acid and hydrogen peroxide, Reduce the PH value of the gut, and use its strong oxidation to alleviate mycotoxin poisoning and protect the health of the digestive system, improve immunity and other functions; In addition, there are catalase, lysozyme and other related products, the specific function is not this unnecessary


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