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Key Technical Points for Field-Stage Management of Machine-Transplanted Rice
Machine-transplanted rice, due to constraints such as seedling age, nursery age, sowing date and plant traits, has relatively high requirements for the tillage and preparation quality of the transplanting field. At the same time, machine transplanting achieves wide-row, fixed-hole, fixed-seedling and fixed-depth planting, satisfying the population basis for high-yield rice population-quality cultivation. Therefore, only by grasping field-stage management of machine-transplanted rice without letting up can we ensure early tillering and steady growth after transplanting, strive for sufficient panicles, promote large panicles and achieve high yields. 1. Field preparation: 1. Fine land preparation: Field tillage and preparation should adopt rotary tillage for stubble removal, with a rotary tillage depth of about 12-15 cm. After introducing water, wait until the water is fully absorbed before
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Detailed Explanation of Key Points of Fertilization Technology for Machine-Transplanted Rice
The total amount of fertilizer applied to machine-transplanted rice is roughly equivalent to that for manually transplanted rice. However, how it is applied at each stage differs between machine-transplanted rice and ordinary hand-transplanted rice. The main reason is that machine-transplanted rice has lower tillering node positions and a longer tillering period. To keep the number of panicles in the population within an appropriate range, the focus of fertilizer management should be on improving the timing of tillering fertilizer application, so as to regulate and utilize the optimum tillering node positions and control the mid-season population, while increasing the application of panicle fertilizer to promote spikelet differentiation and strive for large panicles. The characteristics of machine-transplanted rice and hand-transplanted rice determine that among the basal and tillering fertilizers for machine-transplanted rice, the basal
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What are the key cultivation points of the potato-rice-vegetable rotation model?
The potato--rice--vegetable model is mainly promoted in mid- to high-altitude areas. The key cultivation points are as follows: (1) For potatoes, choose late-maturing varieties with high resistance to late blight, such as Jizhangru No. 5. (2) For late rice, it is advisable to choose high-quality combinations such as Liangyou 2186 and D702 Youduoxi No. 1, so as to take advantage of the large day-night temperature difference in autumn in mid- to high-altitude areas and the good grain filling of rice. (3) In mid- to high-altitude areas, winter temperatures are relatively low, so for winter vegetables it is advisable to choose cold-tolerant types and cold-tolerant varieties.
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Key Techniques for High-Yield Cultivation of Potatoes with Rice Straw Core Padding
1. Variety selection: For fresh potato vegetable varieties, choose Zihua 851, Zhongshu No. 3, Favorita, and other varieties. 2. Land preparation and bed making. Soil selection: Potatoes have a wide range of soil adaptability, and can be cultivated in both sandy soil and muddy land. However, choose loose-textured, well-drained, slightly acidic sandy soil with a pH of 5.5-6.5. Potatoes belong to the Solanaceae family and should not be continuously cropped with other Solanaceae crops or intensively mixed-cropped with them. Small high-ridge land preparation: After the previous crop is harvested, use a rotary tiller to plow and break up the soil, then use a bed-making machine according to the bed width including furrow of 110-
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How to sow potatoes in no-till cultivation with rice straw mulching
The main sowing methods for no-till potato cultivation with rice straw mulching are the following three: 1. Directly placing seed potatoes and then covering with rice straw. In no-till paddy fields, dig high-yield ditches (irrigation and drainage ditches), with a ditch width of 20 cm and a depth of 15 cm, and a bed width (including ditches) of 150 cm. The excavated soil must not be piled on the ditch edges; the bed surface should be slightly arched to avoid water accumulation. Generally, small weeds and rice stubble do not affect planting. If there are large weeds, they can be trampled down or hoed away, and there is no need to use herbicides. Sow 4 rows per bed in a wide-narrow row pattern, with a wide row in the middle with a row spacing of 34 cm, and narrow rows on both sides with a row spacing of 28 cm.
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Detailed Explanation of No-Till Potato Cultivation with Rice Straw Mulching
First, selecting the field and preparing the beds. Choose a neutral or slightly acidic paddy field. When harvesting rice, it is best to leave stubble 15-20 cm high. Before sowing, first mark out beds and open furrows, with a bed width of 1.4-1.6 m, a furrow width of 20-30 cm, and a furrow depth of 15-20 cm. When opening the furrows, scatter the excavated soil evenly in the middle of the bed, and shape the bed surface into an arched back to facilitate drainage. Second, seed potato treatment. Select virus-free seed potatoes that are free of pests and diseases, have smooth and fresh skin, and weigh more than 20 g each. Before sowing, according to the distribution of the buds and the
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Detailed Explanation of Potato Cultivation Technology with Rice Straw Mulching
In 2000, Zhejiang Province carried out research on a new technique for no-till rice paddy cultivation of potatoes with full rice straw mulching, changing "planting seed potatoes" to "placing seed potatoes" and "digging potatoes" to "picking potatoes." The whole process can be vividly summarized as "place, cover, pick," eliminating many operations such as plowing and land preparation, digging holes for planting, intertillage weeding, and digging potatoes. The fresh potato yield per 667 sq m was over 1500 kg. A few years ago, our province introduced this technique and demonstrated it successfully. 1. Select good varieties. Varieties suitable for planting in our province include:
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Key Technical Points for Winter Potato Cultivation with No-Till or Minimum-Till Rice Straw Mulching
I. No-till or minimum-till field preparation. 1. Selection of no-till or minimum-till fields. No-till or minimum-till potato cultivation is best carried out in sandy loam fields with convenient drainage and irrigation, loose soil, a pH value of 5.5-6, and good water and fertilizer retention. It is especially suitable for planting in sandy loam paddy fields with good drainage and irrigation conditions during the winter fallow period in our city. Fields prone to drought and water shortage and shallow, poor fields, heavy clay fields, low-lying fields, mountain pit fields, cold waterlogged fields, and rotten
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Key Cultivation Techniques for Machine-Transplanted Rice at the Transplanting Stage
I. Make a Good Start and Manage the Seedling Nursery Well 1. Apply the "standing-up fertilizer" according to seedling appearance. This is generally done 3-4 days before transplanting; the amount and method of application should depend on seedling color. For weak seedlings with faded leaf color, use 4-4.5 kg of urea per mu diluted in 200 kg of water, and spray or splash evenly in the evening; after application, sprinkle clean water once to prevent fertilizer burn to the seedlings. For seedlings with normal leaf color and upright leaves that do not droop, use 1-1.5 kg of urea per mu diluted in 60-70 kg of water for foliar spraying. For seedlings with dark green leaves and drooping leaves, do not apply fertilizer at all; water control measures should be taken to improve seedling quality.
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Detailed Explanation of Key Techniques for Raising Strong Seedlings for Machine-Transplanted Rice
With the improvement of the level of intensification in rice production, mechanical transplanting has become an inevitable trend. One of the keys to machine-transplanted rice production is raising strong seedlings. The following measures can produce strong seedlings: 1. Apply strong seedling agent. The strong seedling agent is usually mixed with the subsoil. First mix a small amount of fine soil with the strong seedling agent evenly, scatter it on the bottom of the seedling tray, and then add the subsoil. This avoids uneven mixing and scattering due to too much subsoil, which leads to uneven distribution of the strong seedling agent, causing seedling dwarfing and failure to emerge where too much strong seedling agent is present, resulting in seedlings pulling loose during transplanting and affecting the quality of mechanical transplanting. 2. Cover with plastic film.
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