High-quality japonica rice varieties: which varieties of japonica rice are good and is japonica rice hybrid rice?
the author recently learned from Bokun Agricultural Research Institute in Yixing City, Jiangsu Province that the institute and the National Rice improvement Center of China Rice Research Institute have made a breakthrough in the "breeding of new japonica rice varieties with multiple resistance, high yield and high quality" and successfully bred a number of high-yield and high-quality japonica rice lines with resistance to brown planthopper, rice blast and other diseases and insect pests such as 4701 and 4714.
According to , the new japonica rice lines with high yield and high quality converged genes for resistance to brown planthopper, white-backed planthopper, rice blast and stripe blight, as well as genes specific for high yield and high quality. Tests conducted by the National Rice improvement Center of China Rice Research Institute and the Department of Plant Protection of Agricultural College of Yangzhou University showed that these new high-quality japonica rice lines had obvious resistance to diseases and insect pests such as brown planthopper and rice blast.
High quality japonica rice varieties: 4 in Heilongjiang Province, Longdao 18, Wuyoudao 4, Songjing 28 and Songjing 22; 2 in Jilin Province, Tongxi 933 and Ji Jing 816; 1 in Xinjiang Autonomous region, Jindao 2; 1 in Tianjin, Tianlongyou 619; 1 in Shanghai, Shanghai Ruan12; 1 in Henan Province, Jingjing 3.
Japonica rice is a variety of rice, which is deeply loved by people because of its large grain size, high rice yield and not easily broken during processing. at present, it is planted in Northeast China and the Yellow River Basin, as well as in the south, but it rarely survives because of temperature restrictions.
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Control techniques of Underground pests in Upland Rice
In recent years, upland rice planting in Gejiu City with the application and popularization of dry cultivation and transplanting technology has become a new bright spot of rural economic growth in mountainous areas. How to do a good job in the control of underground pests is to develop upland rice production and ensure an important technical measure to increase the yield and income of upland rice. The common underground pests of upland rice are grub (larva of beetle), golden needle worm (larva of kowtow beetle), mole cricket (Oratosquilla), ground tiger (interceptor) and so on. These pests live in the soil during the harmful period, eating seeds, buds and rhizomes, resulting in lack of seedlings, broken ridges or
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Planting of Ophiopogon japonicus
Generally, from mid-April to early May every year, choose cloudy days for planting. Ditch planting and hole planting are usually used. Trench planting according to row spacing of 15 cm, ditch depth of 5 cm, first apply thin pig manure water in the ditch, and then plant seedlings according to plant spacing of 6 cm to 8 cm, 3 plants per clump, compacted with soil after planting, so that the seedlings stand upright and firm, so that the seedlings are straight. In some areas, ditches were planted at a depth of 5 cm to 6 cm on the border surface according to a row spacing of about 20 cm, and 1 to 2 seedlings were planted at a spacing of 15 cm in the ditch, and then compacted with soil cover. 700 kg of seedlings are used for every 667 square meters.
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