3 You 18 is a new breed of hybrid Chinese wolfberry that was selected by the rice research of Tianjin and passed the state trial in 2001. It was listed as a new variety by the Ministry of Agriculture in 2002 for its key demonstration and promotion. 1 The characteristics, yield and quality of rice quality 3 You 18 were earlier and mature, the general growth period was 140 to 150 days, similar to Shanyou 63, Teyou 559, and 7 to 15 days earlier than Wuyujing No. 3; and Shanyou 63, Teyou Compared with 559, 3 You 18 has a shorter vegetative growth period and effective tillering period and a longer reproductive growth period. Plant height about 110 ~ 115cm, thick stalks, tall and straight plant type, good lodging resistance, dark green leaves, short flagpoles, panicle spikes, ear head half upright; disease resistance, especially high resistance to stripes Leaf blight, re-emergence of rice stripe disease in 2001 and 2002 in Shandong and northern Jiangsu and other areas. Wuyujing No. 3 and Wuyunjing No. 8 in neighboring fields were reissued or even lost. 3 You 18 showed that Very few susceptible, no need to control; Strong resistance to sheath blight, rice leafhopper, panicle blast and branch twigs, easier to control; susceptible rice smut, improper control is often a serious hazard, especially heading and flowering In the event of rain or panicle fertilizer when nitrogen fertilizer is too heavy. In national-level regional trials and production sites in northern Jiangsu, northern Fujian, and Shandong provinces, the output is usually more than 650 kg per 667 square meters, and the high-yield fields reach 800-900 kg, which is generally higher than that of 9-138 and 9-plus-418. Increased production by more than 5%, compared with Wuyujing No. 3 and Wuyujing No. 8, etc., can increase production by 10% to 15%. In an organic cultivation experiment that did not use chemical fertilizers and pesticides at all, the actual harvest yield was 628 kg/667 square meters, 42.7% higher than that of Wuyujing No. 3. 3 excellent 18 rice quality is superior, close to the national standard three high-quality rice standards. Tested by the Ministry of Agriculture's Rice Quality and Quality Supervision, Inspection and Testing Center, 9 indicators reached the first-level standard for high-quality rice, and the transparency index reached the second-tier rice standard. Among the tastings organized by the Jiangsu Provincial Department of Agriculture and Forestry, the evaluation of palatability was slightly better. Yuwu Yuyu No. 3 was basically the same as Yuxi No.6. According to our years of planting experience, when the output exceeds 750kg/667 square meters, there is a prominent contradiction between high quality and high yield. The specific performance is that the secondary grouting phenomenon is extremely obvious, the seed setting rate is reduced, and 180 grains per panicle are strong, and the chalkiness rate is increased. To about 80%, the 1000-grain weight generally drops below 26g. In order to ensure high quality, the ideal output should be controlled at 650-700kg/667 square meters, that is, the peak seedlings should be 190,000-200,000/667 square meters, and the percentage of spikes should be more than 90%, and the total number of spikelets per panicle should be controlled between 150-170. The seed setting rate was over 90%. When the stalks were harvested, the stalk green leaf was yellow, the grain weight was more than 27g, and the chalkiness rate was reduced to less than 50%. 2 Good quality and high yield cultivation practices 2.1 Adopting sparsely populated valleys to cultivate many crops and strong soils 3 You 18 The effective tillering period of the fields is shorter, emphasizing that the cultivated field cultivates many plants and grows strong, and through the sparse valley, it can reach a single planting strength during transplanting.蘖 3-4. The amount of net sampan falling grain is preferably not more than 25kg for 667m2 of dry seedlings, and no more than 20kg for wet seedlings, and no more than 35 days of age. 2.2 Appropriately increase the planting density of 650-700kg/667m2. The production level should be 170,000 to 180,000. The planting density is not enough to lead to insufficient effective panicles. Requirements in general fertility conditions, plant spacing 11 ~ 14cm23cm, double planting per hole, planting 22,000 to 24,000 points / 667 square meters, basic seedlings 120,000 / 667 square meters or more. Fertilizer field and early planting field are suitable for planting. The planting density can be reduced to 20 000 points/667 square meters; the thin field and late planting field should be properly planted and the planting density can be increased to 26,000 to 28,000 points/667 square meters. 2.3 Compared with late ripened midges such as Wuyujing No. 3, 3S 18 can save 2~5kg/667 square meters of pure nitrogen. Fertilizer and water transport should adopt the principle of “pre-promoting, central control, and post-sufficient supplementationâ€. Nitrogen, phosphorus, and potassium fertilizers should be used in combination, and trace fertilizers should be applied as appropriate. At the production level of 650-700kg/667 square meters, 18-22kg of pure nitrogen is needed for a lifetime. The field of good water retention and fertilizer retention, the basic fertilizer accounted for about 50% to 60%, about 35% to 40% of tiller fertilizer, to promote delivery; The proportion of total nitrogen is not more than 8%, and high-concentration compound fertilizer is the best. The growing field may not be applied with grain fertilizer to prevent love. The soil with poor water retention and fertility guarantees 40% to 45% of base fertilizer, 35% to 40% of tiller fertilizer, 10% to 15% of panicle fertilizer, and must be combined with NPK fertilizer to prevent premature aging and prevent greediness. In terms of water slurry management, shallow water ground irrigation promoted effective tilling after transplanting. In early July, when the number of stems reached 160,000 to 170,000 square meters/667 square meters, the fields were put on hold to control the occurrence of invalid tillering and achieve stable growth in the medium term; 7 At the end of the month (ear differentiation into the second stage), the field was stopped and the water layer was kept in the field during the booting and flowering period; the paddy field was dry, wet and dry during the filling period; and the water was cut off about 10 days before harvest. 2.4 Comprehensive prevention and treatment of rice smut, aphid and other pests and diseases 3 You 18 before and mid-term pests and diseases can be lighter, and can be controlled as appropriate; emphasis on prevention and control of rice smut in the heading period, available streptozotocin and other efficient drugs, before the break period 5 to 7 One day control, to the break period (breaking 5% to 10%) combined with control of aphids, sheath blight and then prevent one time, in the rain at the heading stage, the nitrogen fertilizer in the latter part of the situation should be appropriate to increase the dose and The amount of water to prevent rice smut, withered white ear occurred.
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