China is a large rice growing country, and rice is also one of the important food crops. Now there are areas where single-season rice is grown in China, and there are also areas where double-season rice is grown. Today, we will mainly learn about the rice plant protection management work arrangements from the pre-sowing to the harvesting months in the single-season rice area in the north.
January and April: Preparation period before sowing
1. Management points: whole field, base fertilizer, seed selection
(1) Selecting the breeding ground: generally choose convenient transportation, flat terrain, leeward sun, convenient irrigation, easy management, close to Honda, good permeability, organic content above 1.5%, pH below 7.5, low salt content field .
(2) Putian production: tilling, sitting on the bed, fertilizing the field.
(3) Selection of seed drying: Select suitable disease-resistant and high-yield varieties. Exposure of seeds before sowing can kill some of the seeds and carry the pathogens, and can increase the germination rate of the seeds.
2. Pest control
This period is mainly to prevent soil-borne diseases.
Second, May: seedling cultivation period
1. Management points
(1) Seed treatment: Treatment of rice seeds with plant growth regulators before sowing can stimulate seeds to enhance metabolism, promote germination and rooting, increase germination rate and germination potential, and lay a good foundation for cultivating strong sorghum. The regulators available in this period are gibberellin, sodium nitrophenolate, triacontanol, cytokinin, sodium naphthaleneacetate and the like.
(2) Strengthen water and fertilizer management.
.jpg "Main points of rice management in the northern region")
2. Pest control
The main control targets in this period are rice rot disease, bacterial blight, and stripe leaf blight.
March and June: transplanting period
1. Management points: rectification, fertilization, and water and fertilizer management
(1) Rational fertilization, promote balanced fertilization, increase application of phosphorus and potassium fertilizers and silicon fertilizer, and avoid partial application of nitrogen fertilizer;
(2) Fine soil preparation, combined with fertilization using a regulator to improve the quality of transplanting, to ensure early rapid growth of rice. The regulators available in this period are: sodium nitrophenolate, brassinolide, sodium naphthaleneacetate, potassium phthalate;
2. Pest control
The main control targets in this period include rice blast, bacterial blight, stem borer, stem borer, rice borer, rice leaf roller and paddy weed.
April and July: tillering to young ear development
1. Management points: promote branching, control lodging, water and fertilizer management
(1) Strengthen water and fertilizer management, rational fertilization, and avoid partial application of nitrogen fertilizer;
(2) Use plant growth adjustment to promote tillering, control and prolonged. The regulators available in this period are calcium cyclamate, paclobutrazol, and uniconazole.
2. Pest control
In this period, the main control objects include sheath blight, rice blast, bacterial blight, mites, rice mites, thrips, and rice leaf mites.
May and August: Booting period to heading date
1. Management points
The use of plant growth regulators, combined with fertilizers, can increase the growth advantage, more spikelets, large ears, more grains and full. Plant growth regulators available in this period include gibberellin, triacontanol, brassinolide, and the like.
2. Pest control
In this period, the main control targets include sheath blight, rice smut, sorghum, spider mites, and rice planthoppers.
.jpg "Main points of rice management in the northern region")
June and September: Grouting period
1. Management points
Use plant growth regulators, with nutrients, accelerate grouting, reduce empty shells, granules, make grouting full, full of seeds, increase 1000-grain weight, and mature in advance. Plant growth regulators available in this phase include amine fresh ester (DA-6), cytokinin, brassinolide, triacontanol, sodium naphthaleneacetate, s-excitation, and the like.
2. Pest control
The main control targets in this period include rice blast, bacterial leaf blight, rice leaf roller, rice locust, stem borer, brown planthopper and so on.
July and October: Harvest period
1. Management points: ripening, real-time harvesting, safe storage
(1) ripening and drying
Plant growth regulators were applied 5 days prior to harvest to promote ripening and drying. Available regulators are: diquat, ethephon.
(2) Safe storage
Rice blast, rice bacterial blight, rice smut disease, rice should be harvested separately, can not be used as seeds, and diseased straw should be stacked separately.
The above is all the content of today. Farmers who plant single-season rice in the north can learn more about it. If you want to learn about rice cultivation, you can leave a message.
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