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How to prune pear trees with an unreasonable structure
Currently, many pear orchards use high-density planting techniques for production. The single-layer high open-center form of pear trees is a tree form suitable for high-density pear orchards. Its suitable density is 44 trees planted per mu. The tree structure is a trunk height of 60-80 cm and a tree height of 3-3.5 m. The top of the central leader
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How is the reasonable crop load of pear trees determined?
Under normal management and moderate crop load conditions, the flower quantity of mature pear trees is generally excessive; some trees even have a flower-branch rate of 70-80%, bearing flowers all over the tree. Although abundant flowers are the foundation of a high yield, excessive fruit set will lead to a large amount of fruit drop and small fruit, and fewer flowers the following year, resulting in alternate bearing. Even with sufficient fertilizer and water, excessive fruit set cannot be allowed. Therefore, pear trees must be controlled to carry a moderate crop load. There are many methods for determining a reasonable crop load. Among them are cultivation experience and numerical indicators. For example, according to the planned yield per unit area, divide the load among individual trees, then calculate the number of fruits each tree should retain based on single-fruit weight, and distribute this among the major limbs; retain 1 fruit per several new shoots so that fruits are evenly distributed among branches; retain 1 fruit per a certain number of leaves, and calculate the number of fruits to retain and their reasonable distribution; retain fruits according to their distribution distance in the canopy; retain fruits based on the single-fruit weight and size of the pear, using experience to guide retention - if fruits were small last year, retain fewer this year; if fruits were too sparse and too large last year, retain more this year; year after year, research has also proposed retaining fruits according to trunk cross-sectional area, which is suitable for young bearing trees. The reasonable crop load is affected by many factors such as cultivation conditions and quality requirements. Its indicators for reasonable crop load should be adjusted in a timely manner. For example, with the development of the market economy, the quality requirements for pears have increased, and the price difference between grades has widened; producing more small fruits is not as good as producing fewer large fruits. For Yangxin Yali pears, pear growers previously demanded a yield of 5000 kg per mu, but now demand a yield of 4000 kg of high-quality fruit per mu. This is because producing 4000 kg of high-quality fruit is more profitable than producing 5000 kg.
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Important reasons why autumn shoots are the main fruiting mother branches of longan
Longan, like other subtropical evergreen fruit trees, grows new shoots throughout the year, and in the Fuzhou area it flushes 4-5 times a year: 1 spring flush, 1-2 summer flushes, 1 autumn flush, and winter shoots are less common, with large numbers of winter shoots emerging only under warm winter conditions. According to Huang Jinsong
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How Should Hawthorn Orchards Be Irrigated Reasonably? A Detailed Explanation of the Technical Points
Hawthorn, an edible plant, a drupe-type fruit, hard in texture, thin in flesh, with a slightly sour and astringent taste. A deciduous shrub. Branches densely growing, with fine thorns, young branches covered with soft hairs. Twigs purple-brown, old branches grayish-brown. The fruit can be eaten raw or made into preserved fruit or fruit cakes, and after drying can be used as medicine. It is a tree species unique to China that serves both as medicine and fruit, with effects such as lowering blood lipids and blood pressure, strengthening the heart, and resisting arrhythmia. It is also a good medicine for strengthening the spleen and opening the appetite, promoting digestion and resolving stagnation, and activating blood and resolving phlegm, with good therapeutic effects on conditions such as chest and diaphragm distension, hernia, blood stasis, and amenorrhea. The flavonoid compound vitexin in hawthorn is a drug with relatively strong anticancer activity, and its extract has a certain effect on inhibiting the growth, proliferation, and invasive metastasis of cancer cells in the body.
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What to Do When Shiitake Mushroom Logs Rot? Cause Analysis and Control Measures
Shiitake mushroom, also known as flower mushroom, monkey head mushroom, fragrant mushroom, fragrant trust, fragrant fungus, winter mushroom, fragrant mushroom, is the fruiting body of the plant Xiangxun of the Pleurotaceae family. Shiitake is the world's second largest [1] edible fungus, and is also one of our country's specialties, long known among the people as a mountain treasure. It is a kind of fungus that grows on wood
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Zucchini Cultivation Techniques: Planting Density Must Be Reasonable, Later-Stage Management Is Key
Abstract Soil preparation and fertilization: mainly organic fertilizer, combined with an appropriate amount of cake fertilizer, compound fertilizer and plant ash; spread the fertilizer on the ground and then level the ground. Digging furrows and making beds: use deep furrows and high beds, with plastic film mulching cultivation. Planting: plant in mid-March, when the seedlings are about 30 days old. Temperature
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Kiwifruit Cultivation Techniques: How to Prune and Train Plants to Ensure Fruit Quality
Abstract Orchard site selection: deep soil layer, high soil humus content, loose and fertile, adequate water source with good drainage and irrigation facilities. Planting: sturdy planting stock, reasonable planting distance and male-female ratio. Root pruning: prune the damaged or moldy parts of the root system. Branch pruning: for young seedlings
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Reasons and Solutions for Peach Egg (Graptopetalum amethystinum) Leaves Not Turning Red, Wrinkling and Falling Off
The reason Peach Egg (Graptopetalum amethystinum) is called Peach Egg is that most of the time it displays a pink color similar to peach blossoms. Therefore, in most people's view, once Peach Egg takes on some other color, does that mean something has gone wrong with the succulent? So
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Reasons and Solutions for Leaf Drop and Pest Infestation in Echeveria 'Fozu Lian' Succulents
Leaf drop in succulents is a very common phenomenon. Most of the time, when the succulent leaves are overly mature and the plant is lush with branches and foliage, it will automatically shed some leaves as a means of propagation. But when the plant's branches and leaves are not dense and the leaves are still small
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Reasons for Dry, Withered Leaves on the Echeveria pulidonis Succulent, Solutions, and Propagation Tips
The Echeveria pulidonis succulent is one that many people love to grow. Its leaves are usually red and green, very beautiful. But many people run into problems when growing it, and the most common one is dry, withered leaves. Actually, there are plenty of tricks to solve these problems too.
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