1, choose high-quality varieties, strengthen seedling quality
High-quality and high-yielding varieties and dry and vigorous breeding are the prerequisites for Sanchao's cultivation. Only by selecting high-quality, high-product varieties suitable for the local ecological conditions, and using appropriate cultivation techniques, can the characteristics of varieties be fully exerted to produce high-yield and high-quality rice. Therefore, in the selection of varieties, safe heading and safe maturation should be taken as the center, and fine varieties with large panicle type, high picking rate, compact plant type, leafy jerk, and high yield performance should be adopted. The seed purity is 99% and the germination rate is above 95%. At present, Dongong-V7 and Dongnong 98-25 should be the main varieties. In the process of seedling raising, the quality of seedlings should be strengthened. Large and medium sheds should be used to raise seedlings, and techniques of three-film covering should be promoted. Strict control of sowing volume should be strictly controlled. It is advisable to plant 2-3 seeds per hole in carcass seedlings. 50 grams of seed germination is appropriate. The sowing date is controlled before April 5. The seedling age is more than 40 days, and the leaf age is 4.5-5.5 leaves. In this way, the vegetative roots are thick and flat, the seedlings are more tidy, the leaves are jerk, and the plants are flexible. , full and strong.
2. The rare planting is the basis of Sanchao's cultivation
Sparse planting can improve the quality of panicles. It is an important measure to increase the percentage of spikes, seed setting rate and 1000-grain weight on the basis of constructing photosynthetic population quality and stabilizing the appropriate number of stems. When the temperature is stable at 13Â°C, it will enter the transplanting stage, generally From May 15 to May 25, the seedlings bring medicine to the land. The planting density and scale depend on the characteristics of the variety, the degree of growth, and the fertility of the soil. The general size is the row spacing of 36.3-39.6 cm, the spacing of 16.5-19.8 cm, and two plants per hole.
3. Fertility and scientific fertilization are the guarantees for Sanchao cultivation
Adhere to both organic fertilizer and chemical fertilizer, under the premise of increasing organic fertilizer, fertilizer N: P ratio of 2:1:1. The total amount of phosphate fertilizer and 50% of the total N and K fertilizers were applied before the ploughing or before the sloping ground. 30% of the total N was returned to green for manure, and the remaining 20% â€‹â€‹and 50% of the K were in July. 10 days before the application of panicle fertilizer. Fertilizer before the end of fertilizer application, hectare applied urea 150kg, diammonium 150kg and potassium sulfate 80kg, if using ammonium sulfate as top dressing, the total amount of hectare 225kg, manure fertilizer 150kg, ear fertilizer 75kg. The hectare base fertilizer is 375kg, the hectare recovery is 150kg of ammonium sulfate, the hectare recovery is 100kg of ammonium sulfate and the potassium sulfate is 75kg. So as to achieve the main attack panicles, ear and grain weight. About 70% of the planned stem number should be reached on or about June 25, if appropriate, the appropriate panicle fertilizer should be added in advance to adjust the grain structure of panicles and ensure the yield index.
4. Adopt water-saving irrigation to increase the temperature and build a strong rice population
Temperature regulation, fertilizer regulation, gas regulation, change of the field microclimate, defense against cold damage, disease, promote the growth and development of rice, to achieve the purpose of raising roots, keeping leaves, increasing grain weight, high yield and quality. Therefore, the management of water layer in rice growth period should be centered on heat preservation, warming, root strengthening, and stimulating. In case of low-temperature weather, the water should be warmed up at night, and the water should be warmed up by day and night in shallow water, in addition to the bubbling fields, transplanting, and seedlings. Apart from fertilization and pesticide application, no water layer was established during the whole growth period, ie, no water was used to irrigate the former water, and the wet state of the entire field, water stoppage, and harvest time were not to be premature, so as to ensure grain weight and quality. It is advisable to stop watering at the end of ripening 35 days after heading, and to harvest when the ripening rate reaches 95%.
5, adhere to environmental protection, plant protection and pay equal attention to ensure the quality of rice
In the cultivation, the use of inorganic fertilizers should be controlled, and the principles of equal organic and inorganic resources should be adopted. Vigorously promote the use of biological pesticides and high-efficiency, low-toxicity, low-residue pesticides to ensure the quality of rice.
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