Some time ago, hail weather occurred in some areas of our province, and some blocks of corn suffered losses. How to save?
1. Plant wound disinfection. After the corn has been hit by a locust plague, the wounds are susceptible to pathogens such as bacteria or fungi and cause other diseases, especially damage to the stalks. From the field inspection of the damaged plants after the disaster, it was observed that some of the damaged parts of the stem had brown necrotic tissue. If the necrotic tissue continues to expand, it may cause the stems to be blocked or the stems decay. After the disaster, the whole plant can be sprayed with 72% of streptomycin 3000 times or 500 times of 5% water solution to reduce the infection of pathogens such as bacteria or fungi.
2. Topdressing available nitrogen fertilizer. Due to the severe damage to the leaves of corn plants affected by flood disasters, the area of ​​photosynthesis declines and the supply of organic nutrients decreases, which will affect the development of the ear and the grain filling after silking. Therefore, it is of great significance to promote the formation of larger green leaf area and improve the photosynthesis ability of plants. After the locust plague, 10 to 15 kilograms of urea can be applied to each acre to promote the subsequent development of the leaves to form a larger leaf area.
3. Change fresh fruit ear. Damaged corn plants damaged by the locust plague were seriously damaged, the nutrient supply was insufficient, and the grain filling was affected at the later stage. The alopecia pallidus and grain abortion were aggravated, and the 1000-grain weight was reduced. If harvested grains are harvested as they have been in the past, they will not only reduce their yield, but also reduce their grain varieties. Therefore, severely affected plots may be considered to be harvested 20 to 25 days after pollination and harvested as fresh corn ear; the corn green straw after harvesting fresh crops can also be sold to the farm for silage.
4. Destroy other crops. Normally, the damaged land should not be easily destroyed. However, if there are serious damage to the leaves and the stalk necrotic tissues continue to spread or even rot, the other crops can be destroyed earlier. For example, sweet corn, waxy corn, mung bean, buckwheat, etc., or vegetable crops such as radish, for the purpose of harvesting fresh fruit spikes.
Plant extracts refer to substances extracted or processed from plants (all or a part of plants) using appropriate solvents or methods, and can be used in the pharmaceutical industry, food industry, daily chemical industry and other industries.
There is a conceptual overlap between plant extracts and herbal extracts. The raw materials of plant extracts in my country are mainly derived from Chinese herbal medicines, so domestic plant extracts can also be called Chinese medicine extracts to some extent.
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