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What are the control methods for apple silver leaf disease?
Apple silver leaf disease is distributed in all apple-producing areas of China, occurring mainly in the apple-producing areas along the old course of the Yellow River in Jiangsu, Anhui and Henan provinces, and rarely seen in other apple-producing areas. It is a devastating disease that, under suitable conditions, can cause the entire apple tree to die. [Identification
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What are the scientific methods for picking apples?
First, check the weather conditions. During the harvest period there is a lot of moisture; when there is dew, fog or raindrops, the fruit rots easily and does not keep well, so choose a sunny day to harvest. If forced to harvest in rain or fog, the picked fruit must be spread out in a ventilated place to dry. Second, harvest the fruit in order. When picking
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What are the methods for improving the smoothness of apple fruit skin?
1. Fruit bagging. Fruit bagging is one of the best and most effective technical measures for improving the smoothness of apple fruit skin. Fruit bagging can make the skin smooth and delicate, with bright color, fewer russet spots, and small and few fruit dots, thereby improving the appearance quality of the fruit. 2.
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What are the control methods for apple fruit cracking disease?
In the late stage of apple growth, fruit cracking disease is common and causes relatively serious damage, severely affecting the commercial value of apples and deserving sufficient attention. Apple fruit cracking disease is caused by slow expansion of fruit flesh cells during the early drought period of apple growth, and rapid cell expansion when rain occurs in the middle and late stages of apple growth
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What are the disease prevention and control methods for licorice cultivation?
The main diseases of licorice are: rust, brown spot and powdery mildew. The prevention and control methods are as follows: 1. Rust: when infected, yellowish-brown scar-like lesions appear on the underside of the leaves; after the epidermis ruptures, brown powder is released, which is the uredinium of the pathogen; in August-September, dark brown telia
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What are the propagation methods for growing Salvia miltiorrhiza (red sage)?
Seed propagation: Broadcast sowing is generally used, and sowing is best done from the year's Grain in Ear to Summer Solstice and from End of Heat to White Dew in the year the seeds are collected. The seedbed should be land with a slightly higher elevation, loose and fertile soil, and convenient watering. For raising seedlings in mountainous areas, it is best to choose a hillside slope at the foot of a mountain facing east or southeast as the seedbed, to reduce sun exposure and help seedling emergence. The seedbed should first be plowed, and decomposed human manure and urine used as base fertilizer. The soil should be broken up fine and made into high beds 1.3-1.66 m wide. Then the seeds are evenly broadcast shallowly on the bed surface; after sowing, press lightly once with the foot so the seeds adhere closely to the surface soil (no need to cover with soil), cover with a thin layer of wheat straw, and sprinkle water frequently to keep it moist. When the seedlings have 3-5 true leaves, thin them out if they are found to be too dense. The thinned seedlings can be temporarily planted elsewhere and cultivated. During this period, pay attention to watering and promptly apply 1-2 topdressings of dilute human manure and urine to promote seedling growth. The suitable time for transplanting is from late October to early November of the same year. Before transplanting, open holes on the prepared bed surface at a spacing of 25 cm × 25 cm, with the hole depth depending on the length of the seedling roots. Plant 1-2 plants per hole, with the planting depth such that the heart bud is slightly exposed; do not plant too deep, and do not let the root crown be exposed above the soil. After planting, cover with soil until the holes are level, press slightly firm, and water promptly to settle the roots. When Salvia miltiorrhiza is transplanted early, it takes root early, and by the time the cold winter arrives it has already survived, and it will green up early the following year; as far as possible, do not delay transplanting until the severe cold season.</p><p></p><p>Root division propagation:</p><p>Carry out from the Beginning of Spring to Awakening of Insects. Select robust new roots about 1 cm in diameter for planting. Before planting, first cut the roots into 5-7 cm long root segments. The planting density is 27 cm between rows and 20 cm between plants. Open furrows on the bed surface, place the root segments upright in the furrows, taking care not to place the upper and lower ends upside down, and after planting cover level with soil. Seedlings generally emerge after Grain Rain. With root division propagation, flowering is later, and it is difficult to harvest seeds in the same year, but the roots grow faster.</p><p>Division propagation:</p><p>From the Beginning of Winter to the Awakening of Insects of the following year, when harvesting home-grown Salvia miltiorrhiza (generally between the Winter Solstice and the Beginning of Spring), select robust, disease-free plants, cut off the thick roots for medicinal use, and use the roots thinner than a cigarette, together with the rhizome head and heart leaves, as planting stock for propagation. Wild Salvia miltiorrhiza can also be dug up and transplanted together with roots and seedlings. Large seedlings can be divided into 2-4 plants according to the natural growth conditions of the buds and roots, and then planted.</p><p>Cuttage:</p><p>Around Qingming, select thick, strong stems, cut them into sections with 2-3 nodes each, cut off part of the leaves, and insert them into the prepared bed, burying 6-10 cm in the soil, leaving the buds slightly exposed above the soil surface, press the soil firm, and water immediately. After that, spray water with a sprayer in the morning and evening to keep the bed surface moist.</p>
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Detailed Explanation of the Layering Method for Asexual Propagation of Cornus officinalis
Cornus officinalis, also known as Zaopi, Yaozap, Shuzap, and the fruit peel after pit removal is called Shanyurou or Yurou, is a woody Chinese medicinal herb unique to our country, with wide uses, and its medicinal value, economic value and ornamental value are all very high. It has long been a scarce medicine in domestic and international pharmaceutical markets, and in recent
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What are the control methods for leaf blight in Atractylodes macrocephala?
Just from the name Atractylodes macrocephala, it is hard for us to know what kind of thing it is. In fact, Atractylodes macrocephala is a kind of traditional Chinese medicine. As we all know, traditional Chinese medicine culture has always been deeply rooted in people's hearts in our country, because traditional Chinese medicine does much less harm to the human body when treating diseases, and traditional Chinese medicine can
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What are the land preparation methods for growing Coptis chinensis in natural forests?
After the site is selected, land preparation can be carried out. It is generally done in autumn. First, all the moso bamboo, thatch grass, etc. in the forest are cut down and cleared away, and the woodland is cleared; all trees are left uncut. According to the shading condition of the tree canopy, the shading degree should generally be kept above 70%. Where the shading is too dense,
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Main Root Diseases of Tea Plants and Their Control Methods
1. Tea seedling white silk blight (1) Distribution and symptoms: Tea seedling white silk blight is a common root disease in nurseries. It has a wide distribution range and causes severe damage. Besides tea, it can also harm more than 200 kinds of plants including cucurbits, Solanaceae, hemp, tobacco, and peanut. It occurs at the root collar, where the diseased
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