Control methods of jujube gall midge
Due to the small size of each insect, it is difficult for manual control. Chemical control is generally applied, and the methods are as follows:
(1) ground control: when jujube buds are about to sprout (about mid-April), 2.5% trichlorfon powder or 25% phoxim capsule 200mm 300 times solution (fine soil cover or light hoe soil mixing) are sprayed under the canopy before the emergence of overwintering adults. Or 4% acephate powder, or 4% dibromophoe powder can be sprayed on the ground when the nursery ground is between rows.
(2) medication on trees: spraying on trees during the occurrence of larvae in late April, the medicament can be selected as follows: 80% dichlorvos EC 800 times, 30% acephate 600 times 800 times, 50% dibromophos EC 600 times 800 times, 20% cypermethrin EC 2000 times. The medicine was used once every 10 days for a total of 2 times and 3 times. Attention should be paid to the reduction of drug concentration after leaf spreading or after June in order to prevent drug damage. The winter jujube tree and nearby sour jujube seedlings should be treated together.
- Prev
High quality Pear Variety-Huangjin Pear
The golden pear was bred by a cross between the new height and the 20th century. It was introduced into China by South Korea in the 1990s and is suitable for growing in the middle and lower reaches of the Yangtze River and the Huaihe River basin. The variety has strong growth potential, more open tree posture, green-brown one-year-old branches, large and thick leaves, oval or oblong leaves, sharp and dense serrated leaf edges, and yellowish green leaves on tender shoots. The fruit is round and slightly flat, the pericarp is yellowish green, the bagged fruit is golden yellow, transparent, the pericarp is thin, the fruit spot is large and sparse, and it is very beautiful. the average weight of a single fruit is 350 grams, the pulp is fine, tender and crisp, there are no or very few stone cells, juicy and unique flavor.
- Next
Processing of turbid peach juice beverage
(1) technological process: raw materials are selected: → fruit washing, → blanching, → crushing, → beating, → filtration, → blending, → degassing, homogenization, → sterilization, → filling, → sealing. (2) Technical essentials: ① raw material selection: select ripe fruits, remove diseases, insect pests and rotten fruits, pick out low-mature fruits and then use them after ripening. ② cleaning: wash the dirt on the surface with clean water, or remove the hair from the peach skin with detergent. When there are many pesticide residues, rinse with 1% hydrochloric acid solution, and then rinse with clean water. ③ perm: at 80 ~
Related
- Moge, come on! The staff of the peasant association in the producing area of cantaloupe were frightened when the crowd gathered.
- Causes and Solutions of low Fruit setting rate of Apple
- Symptoms and control measures of passion fruit virus disease
- Fruit growing lesson: how do apple orchards keep high yields?
- Can you build orchards in the mountains? What are the pros and cons?
- How to manage the coloring period of Crisson grape?
- This paper introduces the processing technology of two kinds of fig products.
- How much is a month for retired teachers in rural areas by 2020?
- How can strawberry planting increase sugar content? We should pay attention to management in many aspects.
- What are the cultivation techniques on how to improve the yield of golden fruit?