Asparagus stem blight must be prevented

Asparagus stem blight, once disease is difficult to treat, is currently a major enemy of asparagus cultivation, seriously affecting the production of asparagus and shortening the harvesting period. At the analysis meeting on the 2007 production situation of asparagus organized by the Provincial Agricultural Technology Extension Station, Guo Zhiqiang, deputy director of the Agricultural Bureau of Rongcheng County, summarized his own practical experience for more than a decade and told them about the prevention and treatment of the disease. Asparagus growers benefit everyone.

Guo Zhiqiang said that at present, 90% of the asparagus produced in China needs to be processed and exported, and the products are mainly exported to Japan, Europe and the United States. However, since May 2006, Japan has officially implemented the "positive list" system, which has affected the export of Chinese asparagus to Japan to a certain extent, while the export of asparagus in Rongcheng has been very smooth. This is mainly the result of the prevention and control of asparagus stem blight by local farmers in strict accordance with the principle of “prevention”.

He summed up the method of prevention and treatment of asparagus stem blight into two cross-guidelines: "One morning and one night", "One high and one low", "One on one", "One dry and one wet", and "One after the other."

"Early morning" is an early prevention. Asparagus stem blight usually occurs only on newly grown stalks, so it is necessary to use a bacteriostatic net to fight the drug 3 days before leaving the stem to sterilize the environment and grow new stems in a pathogen-free environment. "One night" is late watering. Stem blight is a high-humidity disease, and field humidity should be controlled. Forty-five days after asparagus stalks grew, the disease-resistance performance was significantly enhanced. In 40 days, no watering was required. Before pouring stems, sufficient water could be poured and fertilizer applied. Fertilizer was applied to slow release fertilizer to ensure fertilizer efficiency. Then cultivator loose soil.

"One high" is cultivated in high ridges to reduce humidity. It is advisable to use 2/3 of the furrows on the water surface when the ridge height is watered, so that the upper 1/3 of the upper ridge is kept dry and the stem blight germs cannot germinate. "One low" is the point of contact between the base of the stem and the ground.

"A" means that the asparagus shoots on the shoots of the asparagus plants should be hit and beaten during the fight. "One click" means that the ground should be sterilized before leaving the stem.

"Dry" means no watering within 40 days of stem keeping, and cultivating in a timely manner after raining to reduce the humidity in the field. "A wet" is a light watering. It can pour small water during shoots, which can increase the yield of asparagus and make the shoots crisp. During germination, the germs are not afraid to germinate, and the stems are harvested immediately after the shoots are grown. The pathogens do not have hosts and do not cause harm.

“One before” sprays medicine once before watering, and “one after the other” sprays medicine after it rains to prevent germs from germinating due to high humidity.

In this way, as a result of systematic prevention, stem blight of asparagus stem disease rarely occurs and there are few medications.

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