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Key Technical Points for Spring Management of Apricot Trees in Greenhouses
In winter-warm greenhouses, the fruit development period of apricot trees runs from mid-February to the end of April. This period is divided into three main developmental stages. The first stage is the first rapid growth period of the apricot tree and the new shoot growth period, lasting 28-34 days; the second stage is the pit-hardening period, lasting 8-12 days; the third stage is the apricot
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Key Technical Points for Soilless Propagation and Cultivation of Hawthorn
Hawthorn Propagation Methods The seedlings used for potted hawthorn differ considerably from those used for field planting. For potted seedlings, the primary requirement is that within a relatively small range from the root crown, there should be well-developed fibrous roots; the greater the quantity of fibrous roots, the more favorable it is for growth after potting. In addition, according to the size of the pot used
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Control Methods and Key Technical Points for Lemon Gummosis
Lemon is rich in amino acids, vitamins, various trace elements and other nutrients essential to the human body, making it an excellent health fruit for human consumption. Lemon has a wide range of practical value, and demand is growing ever larger, with broad market prospects; at present, lemon is a fruit in short supply on the international market
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Detailed Explanation of Technical Requirements for Harvesting Fresh Lemons
1. Harvesting of spring flower fruit begins around October 1. 2. Do not irrigate the orchard within 5 days before harvest, do not apply nitrogen fertilizer for 20 days, and do not apply pesticides for 30 days, to ensure that lemons are harvested outside the safe interval period. 3. Do not harvest on overcast or rainy days, in dense fog, or in the morning before the dew has dried. 4. Harvesting
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Key Technical Points for Spring and Summer Field Management of Navel Orange Orchards
Spring comes early in southern Jiangxi, warm and rainy. From March to June, navel oranges are in the phenological stages of spring shoot growth, flowering and fruit set, and the first and second physiological fruit drop. This is also the dangerous period when more than 10 kinds of pests and diseases, such as citrus flower bud midge, mites, scale insects, tortrix moths, longhorn beetles, anthracnose, resin disease, and canker, rapidly multiply, spread, and proliferate.
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Key Technical Points for Maintaining High and Stable Yields in Mature Longan Trees
Environmental factors such as warm winters have seriously affected the fruit set of longan, so much so that the yield of Putian longan in recent years has consistently been unsatisfactory. To ensure high yields in mature longan trees, four critical gates must be strictly controlled. The first is the variety gate. Years of practice by agricultural technology departments have shown that the 'Songfengben'
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Fertilizer and Water Management Methods and Technical Key Points for Pitaya Orchards
(1) Fertilization Pitaya, like other cactus plants, has a smaller growth volume than conventional fruit trees. Therefore, fertilization should follow the principle of sufficient amounts, small quantities, and multiple applications. Young trees (1 to 2 years old) should be mainly fertilized with nitrogen fertilizer, applied thinly and frequently, to promote tree growth. Mature trees (3 years old and
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Key Technical Points for Greenhouse Cultivation and Management of Dragon Fruit
Dragon fruit, also known as red dragon fruit, green dragon fruit, immortal honey fruit, etc. Currently cultivated varieties mainly include white dragon fruit, red dragon fruit, and yellow dragon fruit. Dragon fruit is very nutritious, mainly containing vitamins, cellulose, glucose, carotene, fat, amino acids, and
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What are the key technical measures for increasing yield in the late growth stage of corn?
To achieve high corn yields, the following four key techniques should be carried out in the late growth stage. 1. Pull out barren stalks. After the booting stage of corn, time should be taken promptly to pull out the barren plants that have weak growth, slender stalks, and either no ears or ears that cannot grow large and do not silk, pollinate, or set seed.
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Key Technical Points for Summer Corn Planting and Field Management
Most summer corn has already entered the jointing stage to the large trumpet stage; therefore, doing a good job of chemical regulation for lodging prevention at the jointing stage, ear fertilizer application, and pest and disease control is crucial for achieving high corn yields. 1. Scientific chemical regulation. Because the wheat growth period was delayed, corn sowing dates were generally later, and the jointing stage coincided with the rainy season, planting hidden risks for corn lodging. Chemical regulation not only makes corn stalks tough, the root system well developed, and lodging resistance stronger, but also deepens leaf color, thickens leaves, increases chlorophyll content, and enhances photosynthesis. It can generally reduce plant height by 10-15 cm and ear height by 10-12 cm, and can also shorten internodes, shaping an ideal high-yield plant form with good ventilation and light penetration. It plays a role in drought resistance, disease resistance, lodging resistance, and promoting reproductive growth, helping to produce large cobs, more kernels, heavier kernels, and a low bare-tip rate. It increases density by 200-400 plants per mu, with a yield increase generally of 15%-30%, truly achieving “seeking high yield within dense planting.” The time for chemical regulation is generally when corn has 6-13 expanded leaves, and the effect is best at 8-13 expanded leaves. Before the 6-leaf stage, corn leaves are slender and the leaf surface is smooth. When corn reaches the 7-expanded-leaf stage, the leaves become broad and thick, and fine soft white hairs appear on the leaf surface that can be easily felt with the back of the hand; this is the best time to spray chemical regulation agents. For the spray agent, the top choice is Dinongbao, the latest research achievement of the Chinese Academy of Agricultural Sciences.</p><p>2. Topdressing ear fertilizer. During the ear stage, the absorption of mineral nutrients is greatest and the absorption intensity is highest; this is the period when corn absorbs nutrients fastest and is also the most important fertilization period in its life. Topdressing nitrogen fertilizer at the large trumpet stage can effectively promote the differentiation of female ear florets and achieve large ears with many kernels. Generally, 20-25 kg of urea or nitrogen-potassium compound fertilizer can be topdressed per mu. The topdressing method can be trenching beside the rows or hole application deep beside the plants, preferably combined with irrigation or applied during effective rainfall. Never broadcast fertilizer on the soil surface to prevent fertilizer loss.</p><p>3. Strengthen pest and disease control. For pests and diseases at the summer corn ear stage, focus on controlling brown spot and corn borer. Brown spot can be controlled by foliar spraying with 12.5% Hexaconazole or 12.5% Triadimefon; corn borer can be controlled at the large trumpet stage by pouring phoxim granules into the whorl or by spraying the heart leaves with 4.5% beta-cypermethrin emulsion or 50% phoxim emulsifiable concentrate. </p>
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