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Detailed Explanation of the Key Points of the "Three Supers" Rice Cultivation Technique
I. Select suitable varieties. Adapt to local conditions and choose high-quality varieties that can mature normally and safely in the local area, with moderate tillering, relatively large panicles, relatively high grain weight, strong stress resistance and disease resistance, upright leaves, a compact plant type, and outstanding high-yield performance. II. Sow early at the right time and sow sparsely to cultivate strong seedlings. (1) Seedling raising preparation. 1. Seedbed preparation. ① Seedbed selection: choose a pollution-free, flat and loose, fertile soil, good water-holding, wind-sheltered and sunny plot as a dedicated seedling field. ② Land preparation and arching: in order to achieve ultra-early sowing, prepare the seedbed soil and set up the frame the previous year, cover with plastic film in early to mid-March to promote thawing and raise soil temperature, shallowly plow the seedbed land 10 cm, and rake it level and fine. Make the bed 10 days before sowing, and dig a 13 cm deep ditch around the seedbed.
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Detailed Explanation of the Three-Drainage and Three-Irrigation Water Management Measures for Rice
1. Three Drainages. First drainage: From the critical tillering stage to the stage when the penultimate leaf tip emerges (20 days before heading), the field should be drained and sun-dried to control the growth of ineffective tillers. For fields with vigorous seedling growth and dark green leaf color, as well as fertile fields and cold-waterlogged fields, heavy sun-drying should be carried out to promote fading of leaf color; for fields with poor seedling growth, as well as lean fields and fields with a low groundwater table, multiple light sun-dryings should be carried out, combining sun-drying with exposure, with the degree judged by the field not sinking underfoot. Second drainage: From 5-7 days before heading to the heading stage, a second drainage should be carried out to improve rice root vigor and enhance the roots' ability to absorb nutrients
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Key points of high-yield cultivation techniques for rice intercropping of hybrid rice and glutinous rice
Rice "hybrid-glutinous intercropping" refers to the intercropping cultivation of hybrid rice and glutinous rice. That is, medium-stalk hybrid rice and tall-stalk glutinous rice, using the advantage of the wide rows in the wide-narrow row strip planting of hybrid rice, and adding a single row of glutinous rice according to a certain belt width, row ratio and width. 1. Main advantages of hybrid-glutinous intercropping technology. 1. Increasing rice yield: Test results show that the combined total of the two crops under hybrid-glutinous intercropping increases yield by 28 kg per 667 sq m compared with ordinary hybrid rice, and by 110 kg compared with conventionally pure-planted glutinous rice. 2. Increasing income: Glutinous rice is
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Key Cultivation Techniques for Rice Variety II You 084
II You 084 is a new hybrid indica rice variety bred by the Zhenjiang Institute of Agricultural Sciences in Jiangsu. It shows high resistance to bacterial leaf blight and rice blast. It participated in the Jiangsu Province hybrid indica rice regional trial from 1999 to 2000, was exceptionally admitted to the Jiangsu Province production trial in 2000, and passed the approval of the Jiangsu Province Crop Variety Approval Committee in April 2001. It passed national approval in November 2003. On September 6, 2003, it set a new world record for rice yield per unit area at 1231.17 kg/mu. It is exclusively developed by Jiangsu Mingtian Seed Industry Technology Co., Ltd. Characteristics
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Introduction to the Characteristics of the Rice Variety K You 926
The hybrid rice K You 926 was developed in 1993 by the Rice and Sorghum Research Institute of the Sichuan Academy of Agricultural Sciences by crossing K17A (already identified) bred by the institute with Luhui 926. In 1995, it was jointly introduced to our city by the Chongqing Agricultural Technology Extension Station and the Chongqing Seed Station. In the three years 1996, 1998, and 1999, the average yield in the mid-season rice plus ratoon rice variety trials was 672.53 Kg per mu, a 3.36% increase over the control Shanyou 63. From 1995 to 1999, in 1
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Symptom Identification and Control Methods of Rice Dwarf Disease
The symptoms are mainly distributed in the southern rice-growing areas. Also known as rice common dwarf disease, common dwarf, green dwarf, etc. After rice is infected from the seedling stage to the tillering stage, the plant becomes dwarfed, tillering increases, leaves are dark green and stiff, and in the later growth stage the diseased rice cannot head or set grain. Diseased leaf symptoms manifest as two types. In the white-spot type, dashed-line-like yellowish-white dotted streak spots parallel to the leaf veins appear on the leaves or leaf sheaths, most obvious at the base. The new leaves above the first diseased leaf all show dotted streaks, while the older leaves below generally do not. In the twisted type, under insufficient light conditions, the heart leaf emerges twisted
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Eight Measures for Safe Rice Seed Use Explained in Detail
1. Select varieties rationally. Rice blast is the main disease affecting harvest, and the resistance differences among varieties are very obvious; choosing varieties with strong resistance is one of the most effective preventive measures. In old rice blast areas and shaded cold-waterlogged fields, first, when purchasing seeds, carefully understand the resistance of the variety; second, new varieties should only be promoted after small-scale trial planting; third, use imported Fuji No. 1 for prevention at the early stage of disease onset and during the booting and heading stages. In mountainous areas with high humidity, for hybrid late rice it is not advisable to choose two-line hybrid late rice combinations, to prevent damage from rice false smut.
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Key Management Techniques for Rice at the Booting Stage in August
I. Field Management at the Booting Stage After good early vegetative growth, rice enters the reproductive growth stage of the middle and late periods. Strengthening water and fertilizer management at this stage is very important for high yields. Apply panicle fertilizer judiciously, depending on the field growth of the rice: for plots with too many stems per mu and dark green leaf color, do not apply; for plots with insufficient stems per mu and yellow leaf color, apply fertilizer, which can produce a clear yield increase. 1. Applying booting fertilizer: around August 5, for plots that did not receive early panicle fertilizer (mid-to-late July) and whose leaves have turned yellow at this time, apply 5-7 jin of urea per mu.
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The correct method for broadcasting compound fertilizer during the rice stem elongation stage
During the rice stem elongation stage, topdressing is generally carried out 1 to 2 times. In previous years we used urea, but this year we switched to a high-tower granulated fertilizer. This is a compound fertilizer with high nitrogen and low phosphorus and potassium. The fertilizer granules are round and smooth on the outside, with holes inside, and have a relatively low specific gravity. Before fertilizing, we first drained the flooded water, then broadcast the compound fertilizer granules on the soil surface, and immediately let water back into the field. After the water layer was full, we found that some fertilizer granules appeared on the water surface. These floating granules were blown to one side by the wind, and some stayed in the sheltered corners.
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Management Techniques for Rice at the Jointing and Booting Stage
Management at the jointing and booting stage: When 50% of the plants in the field have the main tiller elongated by 1-2 cm and the shape of the main tiller becomes rounded, it is the jointing stage. When 50% of the flag leaves have fully emerged from the leaf sheath, it is the booting stage. This period is when rice needs the most water in its entire life cycle. If the water is drained for a long time, it will affect the formation of the panicle, resulting in small panicles and many empty grains. However, deep water flooding should also be avoided; instead, irrigate frequently with shallow water and expose the field appropriately to promote root growth, achieving deep roots and lush leaves, and striving for large panicles and more grains.
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