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How to release seedlings after mulching cotton fields with plastic film? Practical tips to share
In plastic-film-mulched cotton fields, the temperature is high, and seedlings emerge quickly and evenly. It takes 8 days from sowing to emergence, and 3 to 4 days after emergence for full stand. After full stand, if the late frost has passed, holes should be broken to release the seedlings. Releasing seedlings too early means they cannot achieve full stand or complete stand; too late is not good for strong seedlings, and if high temperatures occur, it often causes seedling scorching. For drill sowing, holes should be punched according to plant spacing to release seedlings; for hole sowing, holes should be punched according to seedlings. After breaking the film and releasing seedlings, cover the openings with soil to prevent moisture loss, temperature drop, film lifting by strong wind, and weed growth. When releasing seedlings, grasp the principle of releasing green but not yellow, that is, cotton seedlings with flat and expanded cotyledons can be released; yellow-valve seedlings that have not expanded, if released, are easily dried by wind or killed by sun, and cannot be released through holes.
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How to control pests and weeds in single-season rice seedling fields? Here are the control recommendations
I. Weed control in seedling fields 1. Weed control before plowing: 7-10 days before plowing the seedling bed, use 41% glyphosate 150 ml/mu or 10% glyphosate 1000 ml/mu diluted in 30 kg of water for fine spraying to control old weeds before sowing. 2. Weed control after sowing: ① 1-2 days after sowing germinated seeds, use 17.2% bensulfuron-methyl and piperophos wettable powder (Youhebao) 210 g/mu diluted in 45 kg of water for fine spraying. ② At the needle-standing stage of seedlings, use 40% bensulfuron-methyl and pretilachlor wettable
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Detailed Explanation of Key Technical Points for Chemical Weed Control in Schisandra Fields
In recent years, the production of Chinese medicinal materials in the Dandong area has developed rapidly, especially the cultivation area of Schisandra has increased year by year, becoming a new highlight of economic growth in our region. However, weeds in Schisandra seedling fields and main fields have always been a major headache for medicinal growers. Traditional manual weeding is labor-intensive and time-consuming, and using herbicides can effectively improve production efficiency, but there have been few trials. We conducted trials on chemical weed control technology in Schisandra fields with relatively large cultivation areas and achieved good results. 1. Survey results of weed species in Schisandra fields show that in Dandong
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Detailed Explanation of Key Techniques for Direct Seeding and Seedling Cultivation of Schisandra chinensis in Open Fields
Select a sunny plot with loose soil, flat terrain, moist soil and no water accumulation, and make a low bed 1.2---1.4m wide, 10m long, with a level surface. Sowing uses the drill method. Before the autumn freeze, open shallow furrows 2-3cm deep on the prepared seedbed at a row spacing of 15cm, sow 100g of seeds per bed, cover with soil 3---4cm thick, water thoroughly, press down lightly, then cover with 10cm of leaves or a layer of rice straw to maintain moisture and protect against cold, and remove it when the seedlings emerge. To prevent damping-off and other soil-borne diseases,
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Key Techniques for Growing Eggplant in Open Fields in Summer
Eggplant likes water. During the long drought with no rain in July, water must be added to keep the soil moist. When watering, dissolve the fertilizers ammonium bicarbonate, monoammonium phosphate and potassium sulfate in water, at concentrations of about 0.3%, 0.15% and 0.2% respectively. When irrigating through furrows, first fill a furrow with plenty of water, then evenly scatter the above fertilizers into the furrow to dissolve; the application rates per mu can be 15-30 kg, 10 kg and 10 kg respectively. If there is no water shortage, a hole can be dug in the middle of every four eggplant plants, and fully decomposed farmyard manure can be placed in the hole. Note that topdressing should be
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Detailed Guide to Herbicide Application Techniques in Licorice Fields (Part Two)
Weeds can severely affect the yield and quality of licorice, competing with licorice for sunlight, water and nutrients. Some weeds are also intermediate hosts for licorice crop pests and diseases, helping pests and diseases spread and transmit. Especially for artificially cultivated licorice at the seedling stage, if weeds are not removed in time, a large number of seedlings will die, or even the entire crop will be destroyed. Now, in addition to manual weeding, chemical herbicides are often used for weed control. In our county, the following 3 chemical herbicides are currently promoted for artificially cultivated licorice: acetochlor, pendimethalin, and doucaote. Practice has proved that using chemical herbicides for weed control is the guarantee
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How can bamboo-leaf grass in cotton fields be controlled effectively?
First choose a suitable herbicide, then decide the dosage according to the weed species, leaf age and humidity level. For example, when using fluazifop-P-butyl to control annual weeds, when soil moisture is suitable, the effective ingredient dosage per mu is 9-17 grams; under drought conditions it is 17-24 grams; to control perennial weeds, the effective ingredient dosage per mu is 27-45 grams. Spray on the stems and leaves when grass weeds are at the 2-5 leaf stage. In summer, apply the herbicide on windless days, in the early morning and evening when temperatures are lower; uniform spraying is required, and keeping
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Intercropping melons and peppers in cotton fields yields high comprehensive benefits
Xinchang Town in Shishou City, Hubei Province, located in the middle reaches of the Yangtze River, is a major cotton-producing area, with 23,250 mu of cotton planted year-round. In recent years, the town has actively optimized its planting structure, explored and applied the model of intercropping melons (or peppers) in cotton fields, achieving multiple harvests per year and multiple income sources from one field, improving the overall benefits of cotton fields, and blazing a successful trail in planting structure adjustment. In the past, the town planted cotton alone, generally producing 87 kg of lint cotton per mu, with an output value of 940 yuan. According to a 2002 survey, however, the town's cotton-melon (pepper) intercropping model produced output values of 315
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Extreme potassium deficiency in cotton fields can cause large numbers of plants to die
Cotton is a crop sensitive to potassium deficiency, especially since the development of BT transgenic insect-resistant cotton, potassium-deficient cotton fields often show severe disease, premature aging, few and small bolls, poor boll opening and deteriorated fiber quality. Four or five years ago, rapid soil nutrient tests on cotton fields in central and southern Hebei showed that most soils had available potassium content below 80PPM (mg/kg), which is severe potassium deficiency, and some soils were below 40PPM, reaching the level of extreme potassium deficiency. The data measured by soil nutrient rapid testers is not precise; some soil samples measured available potassium content of 0
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How to control shortawn foxtail in garlic fields? Detailed control methods
During the garlic growing season, grass weeds such as shortawn foxtail (Alopecurus aequalis) in the field can be controlled with herbicides such as quizalofop-p-ethyl, haloxyfop-R-methyl, and clethodim. Apply the herbicide early, when the weeds in the field have basically all emerged and are at the 2-4 leaf stage; when the weeds are older, appropriately increase the application rate. In addition, when quizalofop-p-ethyl is used at temperatures below 10°C, its control effect on weeds drops noticeably, so apply it when the temperature is high if possible. Clethodim also has a relatively good control effect on weeds when used at lower temperatures, and since the temperature has been low recently, this herbicide can be given priority.
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