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Corn emergence later than last year, caused by sustained low temperatures
Sustained low temperatures delay corn emergence compared with last year. The corn was planted half a month ago, but because of low temperatures and frequent rain, it has not yet emerged; in previous years at this time it already had several leaves. On May 18, it was still raining, and although the Start of Summer solar term had passed, Harbin
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The hollowing-out of rural areas is becoming increasingly prominent, and the reasons deserve deep reflection
The State Council Information Office recently held a press conference, where Ni Hong, spokesperson for the Ministry of Housing and Urban-Rural Development, and Zhao Hui, director of the Village and Town Department, presented information on the traditional dwelling survey and traditional village protection. Zhao Hui stated that the phenomenon of traditional villages disappearing does exist, and protection efforts have beg
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Village-level affairs agents become a new profession in some rural areas of China
"Grandpa Liu, this is Auntie's pension collection certificate, the annual review has passed. The ID card is tucked inside the back, please keep it safe. Contact me if you need anything." 59-year-old Liu Xiyu took the little red booklet handed over by the young woman across from him, flipped through it, and carefully tucked it into the inner pocket of his jacket. Liu Xi
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When is the right time to apply wheat herbicide: before the New Year, in winter, or post-emergence?
Abstract: Wheat weeding generally targets 2 periods, before the New Year and just after the New Year, that is, the wheat seedling stage and the wheat green-up stage, 2 time windows. In most regions, the wheat seedling stage is around late November, and the wheat green-up stage is between late February and early March. These 2
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When is the best and safest time to apply post-emergence herbicide to corn seedlings?
Abstract: The suitable time to apply herbicide is after 6 PM in the evening. Because the temperature is lower and the humidity is higher at this time, the liquid will remain on the weed leaves for a longer period, allowing the weeds to fully absorb the herbicide components, which helps improve the weeding effect and also improves
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What herbicide is used for pre-emergence closed weeding in soybean, and when should it be applied?
Summary Acetochlor: apply 3-5 days before emergence. Chlorimuron-ethyl: apply 3-5 days before emergence. Metribuzin: carry out soil treatment 3-5 days before emergence. Clomazone: carry out closed weeding after sowing and before emergence. Glyphosate: apply 2-3 days before emergence. 1. Acetochlor
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Detailed Explanation of Key Corn Planting and Management Techniques
Summary Seedling stage management: From emergence to the jointing stage, it is necessary to check for and fill in missing seedlings in a timely manner, remove weak seedlings and keep strong ones. Field management at the ear stage: From jointing to tasseling, 3 rounds of intertillage can be carried out when the seedlings grow to 4-5 leaves, when the seedlings grow to about 30cm, and before jointing. Large
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Detailed Explanation of Key Techniques for Greenhouse Potato Cultivation
The emergence of greenhouse vegetables lets everyone enjoy the vegetables and fruits they want to eat all year round, adding much convenience and ease to people's lives. Potato is a highly popular vegetable, and its annual market sales are fairly considerable, so
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Key Technical Points for Flower and Fruit Retention in Citrus Cultivation
The 2-3 months from bud emergence to fruit set stabilization is the most important period of the year for citrus trees. For a good harvest, comprehensive flower and fruit retention measures must be taken according to the growth conditions of the citrus trees and changes in weather. 1. Reasonable fertilization: For citrus orchards that were not fertilized last winter, organic fertilizer should be supplemented as soon as possible. For adult trees, apply 5-10 kg of chicken manure or 1-2 loads of farmyard manure per tree, plus an appropriate amount of urea, and bury it around the root zone. The fertilization principle during the flower and fruit retention period is: nitrogen-based in the early stage, emphasis on potassium with phosphorus supplementation in the later stage; combining soil fertilization with foliar feeding. For the post-bloom fertilizer, apply compound fertilizer plus an appropriate amount of urea during the flower-falling period to promptly replenish nutrients consumed during flowering; for the fruit-setting fertilizer, apply potassium fertilizer plus an appropriate amount of phosphorus fertilizer; for the fruit-swelling fertilizer, apply compound fertilizer plus potassium fertilizer. For foliar feeding, spray 0.2% monopotassium phosphate twice from spring bud break to before flowering, spray nucleotides during rainy days, and add 0.1% borax to one of the applications; during the young fruit stage, spray foliar fertilizer 2-3 times in combination with pest and disease control or fruit retention, with the first foliar spray including 0.1% magnesium sulfate and 0.1% zinc sulfate.</p><p>2. Soil management: Repair drainage ditches inside and outside the orchard to remove standing water, so that waterlogging on rainy days does not affect root growth or even cause root rot leading to flower and fruit drop. During continuous dry and hot weather lasting more than 10 days, irrigate promptly to keep the soil moist and loose, which helps the root system absorb water and nutrients.</p><p>3. Scientific use of growth regulators: Plant growth regulators commonly used for citrus fruit retention include 2,4-D, fruit-retention hormone, triacontanol, 920, and fruit-retention agents. Use them 2-3 times after flower drop, spraying once every about 15 days. Alternating different growth regulators gives better results. For seedless and few-seeded citrus varieties, using 920 or triacontanol for fruit retention gives better results.</p><p>4. Pest and disease control: During the flowering and fruiting period, the main pests and diseases include red spider mites, rust mites, aphids, citrus blossom midges, tortrix moths, anthracnose, and scab. For aphid control during the spring shoot stage, use omethoate or monocrotophos; in early to mid-April (or early March if drought occurs), control red spider mites, and in mid-to-late April control rust mites, using acaricides or biological pesticides for spraying; spray organophosphorus pesticides at the early bud stage to kill citrus blossom midges and tortrix moths; for diseases, focus on prevention, using fungicides such as copper oxychloride or thiophanate-methyl.</p><p>5. Control early summer shoots: From May to mid-June, promptly remove early summer shoots to avoid competition between shoots and fruit for nutrients, which benefits young fruit development and reduces fruit drop. For vigorous trees with few flowers and few fruits, girdle the trunk 25 days after flower drop to retain fruit, which can also control summer shoots.</p>
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What are the field management precautions for planting Saposhnikovia divaricata
1. Management before emergence: Before Saposhnikovia divaricata emerges, the soil should be kept moist. If there is drought, water promptly. About 15 days after sowing, seedlings begin to appear, and about 22 days later, full emergence can be achieved. When full emergence is reached, remove the rice straw covering the surface of the seedbed, preferably on a cloudy day or after 3 p.m., to prevent
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