Liaojing 454 Rice Cultivation Technique

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Liaojing 454 is a new rice variety selected and bred from the conventional breeding center of the Rice Research Institute, Liaoning Academy of Agricultural Sciences. Due to its high yield, disease resistance and wide adaptability, the cultivated area in our province has rapidly expanded. In order to enable farmers to better understand the characteristics of varieties and breed this variety, we will introduce the high-yielding cultivation techniques in combination with the soil conditions and climate characteristics of our province.

1. Cultivate strong and strong people is the basis for high and stable production. Autumn fall, spring bed, the implementation of plastic film insulation dry nursery. Seeds must be aired for 2 to 3 days before sowing and seeds should be disinfected strictly to prevent the occurrence of bastard disease. Usually sowed in early April, sowing rate of 150 to 200 grams per square meter. Cover soil after sowing, medicine closed, plug frame cover film. After emergence, pay attention to timely ventilation and hardening seedlings to prevent the emergence of damping-off.

2. Transplanting pods in a timely manner, and the growth period of the closely planted Liaojing 454 is 156-158 days. Transplanting rice in a timely manner can only achieve high yields and stable production. Temperatures vary across the province, and transplants are generally started in mid-May. At the end of May, they will be inserted to complete the planting. Liaojing 454 has medium tillering power. If there are not enough basic seedlings, it will not be able to obtain higher panicles after autumn and affect yield. Another feature is the thick stalks and the erect leaves. Moderate close planting can make more efficient use of light energy resources and increase production. Therefore, reasonable planting of Liaojing 454 generally adopts 93-inch and 94-inch row spacing, with 3 to 4 seedlings per hole in the early stage and 4 to 5 seedlings per hole in the later stage. Strive to maintain an effective panicle per mu 300,000 to 320,000 spikes, grain size of 95 to 100 grains per ear.

3. Scientific Fertilization Liaojing 454 is hi-gain and anti-inverted. If you want to win high yield, you must rationally distribute the amount of chemical fertilizer used in each growth stage on the basis of improving soil fertility, so as to ensure a good harvest. Basal Fertilizer: The method of fertilizing 2000 kg/acre fertilization with full-layer fertilization is applied. Mushi ammonium sulfate or ammonium chloride 15 to 20 kg, 10 kg of diammonium phosphate, potassium 15 kg, zinc fertilizer 1 to 2 kg. Manure: The first manure was applied 7 to 10 days after transplanting. From May 25 to June 5, Urea 10-15 kilograms of urea was applied. The second manure was applied on June 15-20. End, ammonium ammonium sulfate 12.5 kilograms. Adjustment of fertilizer: For the poor growth after transplanting, the soil is infertile and should be applied on June 25 to June 26 to adjust the fertilizer once again. The application of ammonium sulfate is 7.5 kg. Panicle fertilizer: The ear of Liaojing 454 is larger and has more grains per panicle. It is necessary to topically apply a certain amount of panicle fertilizer. It is applied at the spikelet formation stage and has the effect of promoting large spikes, increasing the number of spikelets, preventing the degradation of spikelets and increasing the grain weight. Panicle fertilizer is generally applied on July 10-15, and 7-8 kg of urea is applied. Granular fertilizer: It is applied during meiosis and has the effect of increasing the seed setting rate and 1000-grain weight. Normally applied on August 10-15, 2.5 kilos of urea are applied. The later application of panicle fertilizer and grain fertilizer should be based on the climatic conditions of the year, the growth of rice and the soil conditions of different plots, and should not be blindly applied, otherwise it may lead to the occurrence of rice smut, panicle blast and late maturity.

4. The principle of controlling weeds to control weeds is to eliminate grass with compound chemical agents, supplemented by manual weeding to eliminate weeds. 1 Weeding in paddy field is generally done by using closed No. 1 or herbicide herbicide (produced in Heilongjiang Province), which is convenient and effective in weed control. 2 Honda weeding mainly includes the following methods: 15 g per mu, 15 g per mu, plus 60% butachlor (or Da Zhuang) l00 g, mix 20 kg of fine soil, use after returning green, keep 3 ~ 4 cm water layer 5 to 7 days, can control valerian and broad-leaved weeds; 10 grams per mu with 15 grams. Add 60% butachlor (or Da Zhuang) 100 grams, mix 10 kilograms of fine soil, apply seedlings after turning green, and keep the water layer 3 to 4 centimeters for 5 to 7 days to prevent weeds and weeds. For the severely damaged plots of Triticum aestivum, 70% dimethyl tetrachlormium 50-70 grams per acre was used in the late stage of tillering, and 15 kilograms of water was sprayed.

5. Water management requires shallow rice transplanting, inchoate seedlings, shallow moisture seedlings, and effective tilling at the end of the cropping period. Rice can not be cut off prematurely at the end of fertility to prevent premature aging.

6. Prevention and treatment of diseases and insect pests Liaojing 454 should pay special attention to the prevention and treatment of “one disease, three pests” and must not be ignored. From late June to early July, use 30% of the Feifengling spray, 250 grams per mu, 10 to 20 kg of water, to prevent and control II. At the same time, it also has a certain control effect on rice blast, sheath blight and rice smut. 7 to 10 days before emergence of rice with DT killing agent, the amount of 200 grams of mu, spray of water on I0 kg or ammonium chloride per acre copper agent 350 grams, the effect of controlling rice smut is very significant. In mid-August, spray 40% omethoate 50 to 100 grams per acre, 2% azao pine or 1.5% dimethoate powder 1 to 2.5 kg, 80% dichlorvos EC 150 grams, combined with 15 kilograms of fine soil. After drying, it spreads to the ground to prevent the damage of rice planthoppers.

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