Songjing 4 japonica rice
It is the second rice research of Heilongjiang Academy of Agricultural Sciences. From 1997 to 1998, the average unit yield of 8677.3kg/hm2 in the regional trial was 16.5% higher than that of the control Dongnong 416, and the average unit yield of 7339.4kg/hm2 in the production test in 1999 was 8.7% higher than that of the control Dongnong 415. The number of childbearing days is 135 days, and the active accumulated temperature is 2500 Mel 2600 ℃. Plant height 95-100cm, ear length 16cm, 110grains per panicle, 1000-grain weight 26g. Middle and upper tillering ability, fertilizer resistance and lodging resistance, low temperature resistance, salt and alkali resistance. In 1999, artificial inoculation of seedling blast grade 6, leaf blast grade 4, ear neck blast grade 3, naturally susceptible seedling blast grade 4, leaf blast grade 3, ear neck blast grade 3.
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Beimai 6
Characteristics: spring sex, late maturity, growth period 99 days or so, maturity 2 days later than the control Xinkehan 9. Seedling erect, dark green leaves. Plant height is about 105 cm. Spike spindle type, long awn, white hull, red grain, cutin. The average number of ears per mu is 389000 ears, the number of grains per ear is 32.9 grains, and the 1000-grain weight is 34.8 grams. The drought resistance is better, the lodging resistance is general, and the ripening ratio is better. Identification of disease resistance: leaf rust immunity, high stem rust resistance, moderate susceptibility to scab, root rot. Mixed samples were measured in 2004 and 2005 respectively
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Cultivation of Single Stem Wheat in Cotton Stubble
With the adjustment of planting structure, wheat and cotton double cropping area developed rapidly, realizing double expansion and double increase of grain and cotton, but at the same time, some problems were exposed, that is, the suitable sowing time of wheat was at the harvest and flowering stage of cotton, and the conventional sowing method brought many adverse effects on wheat growth and development, such as small seedlings, weak seedlings, easy freezing, poor root development, low yield and instability of panicle, etc. This contradiction can be solved well if the cultivation method of wheat with single stalk is adopted before and after frost. Its main cultivation techniques are as follows: 1. timely pulling firewood, timely vacating stubble
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