Standardized cultivation techniques of Rice Daohuaxiang No.2

Daohuaxiang 2 is a kind of high quality rice in China, which belongs to stem rice. The particles are oval in shape, fragrant, soft and waxy in taste and high in nutrients. It is deeply loved by the people. Next, let's take a look at the standardized planting techniques of Daohuaxiang No. 2 rice.

1. Overall target for estimated production

Overall target production: 0.8000 kg / mu. The yield was composed of 1718 holes per square meter, the reasonable number of ears per hole was 20,21 ears, the filled grains per panicle was 95, and the seedling emergence rate was 26g.

two。 Core technology countermeasure

2.1 category selection

The growth period is 138-140 days, the plant height is 105-110cm, the average ear grain is 100,110, the seedling emergence rate is 26.5g, the yield development potential is 8000 KG / mu, and the varieties resistant to rice blast.

2.2 cultivate strong seedlings

2.2.1 Seedling throwing tray in greenhouse 3540 KG (quality requirement purity 99%, purity 98%, seedling emergence rate above 90%), 2-3 days before soaking seeds, salt water was used to collect seeds with a proportion of 1.13, (10: 12 KG salt water 50 KG, new raw eggs exposed to the river 1 cubic centimeter), so that the plumpness of the oysters can reach 100%. Immediately clean the salt water with cold water for 2 or 3 times after picking up the seeds. Soak in cold water for 5 to 7 days, and the accumulated temperature can reach 100 to live. Under the standard of 25 ℃ ~ 32 ℃, the teeth were accelerated for 36 hours and 48 hours, and the bud length was 1 mm. The suitable length of bud was 32 ℃, 25 ℃, and 15 ℃. After tooth induction, the 40 KG buds were coated with 6.25% bright shield 100 ml film and dried for 24 hours before planting.

Select the pre-seedling land with flat terrain, rich quality, low soil temperature, downwind and spring sun, and convenient lifting and irrigation. For long-term soil improvement, 1.5 cubic meters of high-quality agricultural fertilizer was used in the seedling field after transplanting, and diammonium phosphate 60g / m2 was used beside the seedling bed. Seedling Guangzhou Honda accounts for 1 ∶ 80,100. Prepare the bed in autumn and reserve the paddy field every other year. When composting, you can immediately configure a relative amount of organic fertilizer (* ∶ organic fertilizer accounts for 4 ∶ 1), and apply the surface layer only with butachlor sealed and covered with sub-film, bed * configuration. Paddy field * and peat 3 ∶ 1, or paddy field * and retting manure 4 ∶ 1, 2 KG beds per plate *, about 1000 KG per mu. 500 plates of 434-hole seedling plates or 550 plates of 352-hole rice plates should be prepared in advance per mu. Buckle the shed ahead of time, increase the soil temperature in the bed. Buckle the shed on March 25. The average temperature is stable according to 5 ℃, generally planted on April 8-10, the sowing rate is 3-4 grains per bowl, and the seeds are not exposed with fine sieve powder and covered with 1cm after planting.

2.2.2 Seedling stage management method: sealed heat insulation before budding, 25 ℃ ~ 28 ℃ after budding, no more than 25 ℃ in 1.5 leaf stage, 20 ℃ ~ 25 ℃ in 1.5 leaf stage and 20 ℃ ~ 25 ℃ in 1.5 leaf stage. Because the amount of pre-seedling in the bowl is small, it is easy to have less water, less water is marked as the bed is white, the leaves of the seedlings are wrinkled during natural ventilation, the bed should be kept moist before sprouting, watering should be controlled to the 1.5 leaf stage, and appropriate watering should be done after the 1.5 leaf stage. Pre-seedling, due to the small indoor space of nutrients in the soil, it is very easy to lose fertilizer after 2 leaves, so it should be fertilized properly. One bag (1000 grams) of special fertilizer was applied to every 200 plates of seedlings at 2.5leaf stage. Paddy field barnyardgrass 1.5 leaves, every 100 square meters of 10% dry gold (cyanoflurate) EC 10 ml plus 48% bentazon 30 ml mixed with moderate water sprayer, the safety factor is good. In the seedling 1.5 leaf stage, spray 50 square meters in a bottle of 50 ml with 30% Rimiaoqing at seedling stage.

2.2.3 prepare in advance for transplanting 2 days before transplanting, get out of bed with three. With fertilizer: 100 grams of diammonium phosphate per square meter of rice field; medicine: 70% Van Shile 6 8 grams / 100 square meters or 25% Rustai 6 8 grams / 100 square meters, add water 5 KG sprayer. Rooting agent: use Bihou (gibberellin rutin indole acetic acid mixture) 5000 times liquid sprayer.

2.3 Mechanical equipment ploughing

The depth of rice ploughing should be 15-16 cm, the sticky soil can be deeper, and the sandy soil can be shallower; the deep layer of the tiller should be above 13-14 cm, and the ploughing should be integrated with the tiller. Water ploughing requires height but inch, inch of water does not expose mud, settling is suitable for transplanting.

2.4 transplanting

The average temperature is stable at the beginning of transplanting according to 13 ℃, generally from May 10 to 25, and the best transplanting period is May 15 to 25. The transplanting relative density should be 30 cm between rows and 18 cm between plants. 434-hole seedling plates, 430-450 plates and 352-hole seedling plates are used per mu.

2.5 the secret recipe is fat.

The amount of organic fertilizer applied is 145 KG / mu for pure nitrogen, 80 KG / mu for pure phosphorus, 120 KG / mu for pure potassium and 25 KG / mu for zinc sulfate. Base fertilizer: 45% of base fertilizer before turning soil, 100% of phosphorus and potassium fertilizer, 75% of potash fertilizer. Base fertilizer is highly recommended to use 46% (12-16-18) compound fertilizer with a consumption of 500 KG per mu. Fertilization: urea 150 KG per mu, ammonium sulfate 75 KG / mu, potassium chloride 50 KG. The pure nitrogen of tiller fertilizer was 34.5kg / mu on June 3-5th, that is, urea 75 KG / mu, and that of tillering fertilizer on June 13th-15th was 34.5kg / mu, that is urea 75 KG / mu. From July 12 to 13, pure nitrogen 15KG / mu, that is, ammonium sulfate 75 KG / mu, pure potassium 30 KG / mu, potassium chloride 50 KG / mu.

2.6 Scientific research irrigation

According to the different developmental links of rice, scientific research and irrigation should be carried out, that is, turning green in an inch of water, tillering in shallow water, sufficient seedling drying, sufficient water booting, heading in shallow water, wet grouting, yellow ripening and drying. In the case of ultra-low temperature at booting stage, the irrigation is deep, and the water level is 15cm to 20cm. During the critical period of reasonable tillering of rice, the drainage pipe sunk the field for 10 to 15 days, reduce the nutrient concentration in soil, remove harmful substances in soil, and manipulate the failure tiller, the time is generally from June 25 to July 10.

2.7 Comprehensive prevention of diseases, insect pests and weeds

Closed weeding before rice transplanting. After raking the land for 1 to 2 days, use 50% Ruifei 500 ml / mu closed type, closed type 2 days later transplant. After the rice turned green, use 50% reefite 750 ml plus 30% trimethoprim 300g mixed with tiller fertilizer and urea. If broad-leaved plant weeds such as Cigu, Yujiuhua and Hedyotis diffusa are found in the middle and later stage, they can be prevented with 2.5% Daojie (pentafluorosulfonamide) 1000 ml / mu sprayer. Rice blast was caused by rice blast with 40% Boshi 1 1500 ml / mu plus 2% plus rice 500 ml / mu or 75% tricyclazole 450 g / mu 2% and 500 ml / mu to prevent panicle blast. During spraying, rice canker stage. Stem borer uses 90% insecticidal order 900 g / mu or 20% Kangkang 150 ml / mu, and the prevention time depends on the prediction of insect situation in agricultural science and technology units. Rice water weevil and rice weevil were prevented with 48% chlorpyrifos (chlorpyrifos) 750ml / mu with water spray or sprayer.

2.8 Anti-lodging technology

In the late tillering stage of rice, using dwarf standing hair strong stem medicine, the demand is 15 bags per mu, mixed fertilizer and topdressing, strengthen the tip node, make the tip node shorter and wider, so as to improve the lodging resistance of rice.

2.9 acquisition of mechanical equipment

When all the grains are hardened, the ear axis is dried and yellow, and the grain is matured to 95%, the rice moisture content is reduced to less than 16% and immediately obtained by a combine harvester. The comprehensive utilization of 25 cm high stubble straw can improve soil organic matter and soil organic matter.

Above is all the detailed introduction of the standardized planting techniques of rice of Daohuaxiang 2. The rice particles of rice yield of Daohuaxiang 2 are very round, the color of rice is as bright as a mirror, the taste becomes soft and strong, and the rice is very sweet. This is all due to the maintenance of the original nutrients without outflow, so do not hesitate to grow this rice.