Ningdao 216 (Rice)

Ningdao (formerly 89XW-216) is a mid-late maturing variety bred by using 77-1313 (Ningjing 6) as female parent and Zhou 8023 (high quality strain introduced from Hunan) as male parent in Ningxia Academy of Agricultural and Forestry Sciences. The whole growth period of Ningdao 216 is about 145 days. The height of the plant is about 90 cm and the leaf is smaller. Loose panicle type, in grain density. The grain is ovoid, spikelets awnless. The tiller is extremely strong, the panicle rate is high, the air tax rate is low, the grain filling is fast, and the ripening and yellowing is good. Generally, the number of ears per mu is about 450000, the number of grains per panicle is more than 60, and the weight of 1000 grains is about 23 grams. The resistance to rice blast and bacterial blight in Ningxia reached the level of medium resistance and high resistance. The results of salt and alkali tolerance test of Baiyin Agricultural Research Institute in Gansu Province were as follows: Ningdao 216 > Ningjing 16 > 92XW-3 > Baiyou 2). In the regional trials of high quality rice in Ningxia in 1995 and 1996, the average yield per mu in more than two years was 672.3 kg, which was 4.5% higher than that of Ningjing 7 and 1.7% higher than that of Ningjing 9.

Determined by the China Rice Research Institute, the rate of brown rice is 83.9%, the rate of milled rice is 76.7%, the rate of head rice is 67.1%, the ratio of length to width is 1.6, the rate of chalkiness is 6%, the degree of chalkiness is 1.0, the transparency is grade 1, the gelatinization temperature is grade 7, the gel consistency is 80 mm, the content of amylose is 17.3%, and the content of protein is 9.0%. The above indicators basically meet the first-grade rice standard issued by the Ministry (only the chalkiness rate is 1% higher). The appearance and food quality are excellent. It is a typical high-quality variety of multi-spike and pearl rice.

Crop Institute of Ningxia Academy of Agricultural and Forestry Sciences

Region and technology Ningdao 216 is suitable for planting in Ningxia, provinces around Ningxia and similar rice areas such as * and Jilin. Now it has planted an area of more than 300,000 mu in Ningxia, Gansu and other places. At present, the production and market situation are good, and it has a good prospect of popularization and application.

Cultivation rules:

1. The seeds were soaked with 1000-2000 times "402" agents for 2-3 days before sowing. Sowing and raising seedlings from April 15 to 20, the sowing amount per mu is 200,250kg. Disinfect the seedling bed with "transplanting Ling" or "Special effect Kangkuling" when sowing. The seedling age is about 25 days.

two。 Transplanting seedlings from May 15 to 20. The suitable transplanting density is row and hole distance 25 cm × 10 cm, and each hole is 4 × 5 seedlings.

3. Fertilization should be based on the principle of reducing nitrogen and increasing phosphorus, promoting middle control and replenishing later. According to the calculation of organic fertilizer per mu, organic fertilizer (farm manure) 4 square meters, combined with the first deep application; chemical fertilizer 20 kg ammonium bicarbonate, 13 kg diammonium phosphate or 60 kg calcium superphosphate combined with ploughing for the last time; after leveling the paddy field, 4 6 kg ammonium bicarbonate or 2 kg urea can be applied as flour fertilizer. Tillering fertilizer was applied twice, that is, 45kg urea per mu after seedling turning green in late May and 5kg urea per mu in early June, 4kg urea per mu before or after heading, and grain fertilizer before or after heading. Urea 2kg / mu or ammonium sulfate 5kg / mu can increase grain weight and prevent premature senescence.

4. The principle of irrigation water layer management is "shallow-deep-shallow". That is, shallow water to promote tillering (returning green to mid-June >, moderate drying to promote root growth control (late June to early July), deep water protection from booting stage to heading (mid-July to late July >), shallow water irrigation and combination of dry and wet after heading to stabilize root, protect root and maintain leaves, prevent lodging and ensure full grain filling.

5. The right time for scientific harvest is from the unripe period to the mature stage, and it is generally in late September in Ningxia. It depends on the ripe harvest. The specific external shape is: the rice husk is yellow, the rice grain turns white, hard and not easy to break. The moisture content of rice grain harvested in the right time is 18% to 20%. Combine harvesting and moderate drying of grain on the soil field are advocated. The drying time of manual harvest should be moderate, and the axial flow rice threshing machine should be used for threshing.