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Detailed Explanation of Key Points for Virus-Free Sweet Potato Cultivation Techniques
Virus-free sweet potatoes differ from ordinary sweet potato varieties, and their cultivation techniques also differ. The cultivation techniques are introduced as follows: 1. Ridging and early planting. Virus-free sweet potatoes have strong drought tolerance and vigorous growth. After the wheat harvest, ridges should be made as early as possible to strive for early planting. 2. Formula fertilization. For dry and infertile land, apply 5000 kg of farmyard manure, 30-40 kg of ammonium bicarbonate, 15-20 kg of potassium sulfate, and 40-50 kg of superphosphate per mu; for medium to above-medium fertility fields, apply 3000-4000 kg of farmyard manure, 20-30 kg of ammonium bicarbonate, 20 kg of potassium sulfate, and 30 kg of superphosphate per mu. In addition to applying sufficient base fertilizer, it is also necessary to apply hole fertilizer, seedling-promoting fertilizer, tuber-promoting fertilizer, and later-stage foliar topdressing, etc.
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Sweet Potato Protected Cultivation Experience and Key Technical Points
Using large and medium shed facilities for early-maturing sweet potato cultivation can not only improve the utilization rate of limited land resources and light-heat resources and increase the yield and benefits of sweet potato production, but also enable double-season sweet potato cultivation in the Beijing suburbs, promoting reform of the cropping system
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Main cultivation technical points for purple sweet potato planting
1. Land selection: Most purple sweet potatoes belong to mid-to-late maturing varieties, with tuber rapid expansion and yield formation occurring relatively late. The plot to be planted not only requires relatively high soil fertility, but the soil texture should be light loam or sandy loam, and the land levelness and drainage and irrigation conditions should be good. Purple sweet potato has
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Key Technical Points for Off-Season Cultivation of Sweet Potato
In order to improve the economic benefits of growing sweet potatoes, in addition to post-harvest deep processing, sweet potatoes can also be brought to market earlier through off-season cultivation. Two off-season cultivation techniques are introduced here. 1. Cultivation technique for sweet potatoes marketed in May-June: Use the method of storing water between ridges inside a greenhouse plus a small arch shed to improve the heat preservation effect. Planting can be done from December to January of the following year. Using virus-free shoot-tip seedlings cultivated in a small arch shed, the yield for market in May is 1300 kg per 667 sq m. The income is much higher than that of conventional planting.
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Detailed Explanation of Key Points for Early-Stage Cultivation Management of Rice in Paddy Fields
As the saying goes, "three parts planting, seven parts management." After rice transplanting, it enters the paddy field management stage, and whether management techniques are in place has a great impact on per-unit yield. The core of early-stage cultivation management in paddy fields is "applying tillering fertilizer heavily and early." This can promote early and rapid growth of seedlings, ensure early formation of effective tillers, and lay the foundation for high yield.
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Key Points of Fertilizer and Water Management Techniques for High-Yield Rice Cultivation
In high-yield rice cultivation, the level of yield is determined by fertilizer and water application as the core; fertilizer and water application should be decided according to the fertilizer requirements of the variety, the level of soil fertility, the planting time, etc. Generally, 100 kg of paddy rice requires 2 kg of pure N, 1.2 kg of pure P, and 1.5 kg of pure K. The fertilizer and water application measures are specifically proposed as follows:
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Key Field Management Points 5-7 Days Before Transplanting for Dry-Raised Rice Seedlings
As one of the rice industry demonstration county projects, Dapai Village, Shangguan Town, Dali City, has a rice area of 1425 mu this year, with a yield target of 750 kg/mu. To achieve high and even higher rice yields, agricultural technicians at both the city and town levels have gone into villages and households, gone deep into the fields, and earnestly guided
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What are the key management points during the grain-filling stage of rice?
The grain-filling stage of rice is the critical period that determines yield. Field management should aim to nourish the roots and protect the leaves, prevent premature senescence, improve photosynthetic efficiency, promote grain filling, and increase the seed-setting rate and grain weight. 1. Supplemental application of grain fertilizer: apply grain fertilizer according to the seedlings, the field, and the weather. Apply it when the leaf color is on the yellowish side and the flag leaf is short and small; do not apply it when the leaf color is deep green and the flag leaf is large and plump. Apply it to lean fields, not to fertile fields; apply it when there are many sunny days, not when there are many cloudy and rainy days. Generally, it is appropriate to apply 2-3 kg of urea per mu at the booting stage.
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Key Technical Points for Field Management of Rice During the Green-Returning and Tillering Stage
The green-returning and tillering stage of rice refers to the period from transplanting to the time before jointing and booting. This period is important for determining the number of panicles and laying the foundation for panicle and grain development. The main goal of field management is to promote good root development, rapid green-returning, and early tillering, and to form sufficiently strong
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How to prevent and control rice purple sheath disease? Practical methods and key technical points
Symptoms After rice heading, dense pinhead-sized purple dots appear on the leaf sheath of the flag leaf, then gradually spread to most of the leaf sheath or the entire leaf sheath turns purplish-brown, especially obvious on the outer wall of the leaf sheath, sometimes infecting the inner wall or reaching deep into the stem. In severe cases, the flag leaf dies 7-10 days early.
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