High-yield Cultivation Techniques of Two-line Hybrid Late Rice

In recent years, the combination of two-line hybrid late rice has begun to be widely promoted in the southern provinces, such as Xiangliangyou 68, 65002, Eqiza No. 1, as well as Liangyupete, Peizaoqing, and Peiyou 288. In addition to the general cultivation characteristics of the three-line hybrid rice, these combinations also have some of their own characteristics, namely: strong temperature sensitivity, less elasticity of younger age, compact plant type, suitable for dense planting, and plant resistance to fertilizer and lodging, suitable for high yield and high yield. The late dry matter production and the amount of nitrogen uptake were significant, and grain filling was obvious in both sections. Rice smut was susceptible when heading and flowering. In order to obtain high yields of two-line hybrid rice, in addition to the various methods of high-yield cultivation of three-line hybrid rice, special attention should be paid to the following aspects. one. Severe seed disinfection eliminates 12 hours of seed water source selection and water presoaking, and must be disinfected with strong chlorine and other agents. After disinfection, flush the seeds with clean water. two. Timely Planting Strictly Controlled Planting Period Suitable for Sophora japonicae Liangyupete and Peiza Sanqing in the Longnan Region from June 23 to June 25, and suitable sowing time for the Midnan Region (including Nanchang Region) from June 18 to 22 day. Peiyoupite and Peizashanqing were sowed about 5 days later. 667 m2 (1 mu) sowing rate 8-10 kg. The younger age of Liangyupete and Peizashanqing is 28-32 days, while that of Peiliangyou 288 is 25-28 days. The Peiliangyou 288 can be sowed at the end of June or the beginning of July, and the larvae are controlled within 20 days. three. Plant 13 cm x 20 cm in suitable planting specifications to ensure that every 667 m2 has 22,000-2.5 million pounds, 2 grains per pagoda, and 80,000-10 million basic seedlings (including 2 leaves and more than one heart). four. The scientific fertilization of two lines of rice has a lot of dry matter production and fertilizer absorption in the later period, and it should pay attention to the middle and late fertilization. Every 667m2 of pig manure 1000 ~ 1500 kg, or 200-250 kg of fresh straw returning, or cake fertilizer 40 ~ 50 kg, plus 30-40 kg of calcium magnesium phosphate fertilizer and 8-9 kg of urea as a basic fertilizer. After planting 5-7 days combined with cultivator weeding urea 4-5 kg ​​per 667 meters. Potassium chloride 7.5 kilograms to promote manure; 30-32 days after planting every 667 meters 2 urea 4-5 kilograms, potassium chloride 2-3 kilograms to protect the manure; beginning ear to full ear, every 667 meters 2 Urea 2-2.5 kg for strong seed fertilizer. Fives. Leading fields are dry, wet, and dry, strong and strong. When every 667m2 of field population total number of stems, two yupite and Peizashan reached 60,000-180,000 seedlings. When Peiliangyou 288 reached about 200,000 seedlings, it began to drain the field and put it on the ground several times. When the tip of the tip of the tip of the inverted 2 leaf, it was recharged with shallow water until the head of the rice ear was mixed. For 3-5 days, replenish the thin water and strengthen the seeds. Open the ditch and cut off the water one week before cutting. The two lines have large heads of rice and the grouting phenomenon is obvious in two sections. six. Prevention of rice smut disease before heading 7-10 days, with 14% of ammonia copper 400 liters or 20% Triadin 75 liters, 50-60 kg of water spray. Note that the concentration should not be too high, otherwise it will hurt the leaves.

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