Longfumai No. 8 (formerly Longfu 90-83199)
Breeding unit: Institute of crop breeding, Heilongjiang Academy of Agricultural Sciences.
Approval: it was approved by Heilongjiang crop Variety approval Committee in 1998 and by the National crop Variety approval Committee in 2000.
Variety approval number: national examination and approval wheat 20000011.
Variety source: the young ear of pure line K202 was used as explant, irradiated with cobalt 60 ray, induced in vitro and cultured in tissue.
Characteristics: spring, plant height of about 100 cm, awnless, yellow shell, panicle rectangular, red grain, horny. It was identified that it was immune to leaf rust and stem rust, moderately resistant to root rot, susceptible to stripe rust and highly susceptible to powdery mildew. The weight of a thousand grains is about 36 grams. The bulk density is 776 g / L, the protein content is 17.58%, the wet gluten content is 40.2%, the sedimentation value is 58.8 ml, the water absorption rate is 66.68%, and the stable time is 4 minutes. In 1999, participated in the national northeast spring wheat regional test, 14 points were collected, the yield was increased at 8 points and reduced at 6 points, with an average yield of 238.1 kg per mu, an increase of 4.4% over the control Xinkehan 9; in the 1999 production test, 4 points were collected. The average yield per mu is 256.3 kg, which is 7% higher than that of the control Xinkehan 9.
Key points of cultivation: soil preparation in autumn, fertilization in autumn, fertilizer application amount of 2 to 3 of the total amount, chemical fertilizer application of about 11 kg per mu, N:P:K=1:1.1:0.4. Seeds mixed with medicine, mechanical sowing. 400000 basic seedlings per mu, which will be suppressed in time after sowing. Spring seedlings were pressed at the three-leaf stage for 2 times. Chemical weeding, timely disease prevention and pest control, timely harvest.
Suitable scope: planting in areas with a yield of 250 kg per mu in northern Heilongjiang and eastern Inner Mongolia. Pay attention to timely and early harvest to prevent grain shedding.
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What kind of medicine is the best for prevention and control of older rice?
Chlorpyrifos and abamectin are effective agents to control Chilo suppressalis medinalis, but they are required to be applied at the stage of 1-2 instar larvae of Chilo suppressalis medinalis (during this period, there is no harm to the leaf roll, or at the beginning of rolling the leaf tip), and when the rice leaf roll begins to roll in the field. On the one hand, the larvae of rice leaf roller above the 3rd instar are protected because they are wrapped in rice leaves, on the other hand, they are not sensitive to organophosphorus pesticides such as chlorpyrifos, methamidophos and monocrotophos, and the control effect is poor after spraying. Relatively speaking, the older rice
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Jiudao 22 (formerly known as 99432)
Selection and breeding unit: Jilin Academy of Agricultural Sciences variety source: Zhuangnei 324 / rattan line 138 National quality Review Committee approval opinion: this variety is a conventional japonica rice variety, the whole growth period is about 153 days in Jilin Province, which is similar to "Qiuguang". It shows high and stable yield, medium resistance to rice blast and medium rice quality. It is suitable to be planted in the rice areas of the northern "Qiuguang" ripening period. After examination, in line with the national variety approval standards, approved and approved.
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