The open field wet seedlings or the plastic trays, the dry seedlings, the wet seedlings, the suitable mid-maturing varieties for the sowing date are from June 20 to June 25, and the late-maturing varieties are from June 15 to June 20. The use of plastic disk dry seedlings planting period should be 2 to 3 days earlier. Seed disinfection before sowing, you can first use strong chlorine fine seeds soaked for 12 hours after the clean seeds, and then 80 ~ 100 mg / liter uniconazole solution soaked for 24 hours germination after sowing, the seed germination rate of 90%. Wet seedlings were 20 grams per square meter, and floppy yolks were 22-25 grams per plate. Wet irrigation before emergence. If soaking with uniconazole solution is not used before sowing, after the emergence of one leaf and one heart, 200 grams of paclobutrazol 15% per acre will be applied in waterless conditions of the rice plant, 100 kg of water will be sprayed 12-24 hours after spraying. Pay attention to the control of rice planthoppers, rice blast, rice borer, rice, etc.
No-tillage tillage or rice straw returning tillage and transplanting After the early rice harvest, use 250ml per mu without trace, and spray 36kg of water evenly under anhydrous conditions to kill rice blast and weed, and then soak in the field 1 ~ 2 days after the mud cast. The planting was carried out twice, with the first throwing about 70%, the second throwing 30%, and leaving the aisle after throwing the plant. The width of the box was about 3 meters.
Transplanting (or planting) density is about 25 holes per square meter (17,000 per mu), with 2 seedlings per hole inserted. The general spacing is 20 centimeters and 20 centimeters. It is advisable to use narrow rows of broad rows, ie transplants of 16.7 cm and 23.3 cm, on the premise of not less than 25 holes per square metre.
Intermittent aerobic irrigation Intermittent aerobic irrigation occurs naturally after irrigation, and is re-irrigated after 2 to 3 days and then dried until it matures. During the whole rice growing period, waterless layer or wet irrigation is the main method. When the number of stems reaches 85% of the planned number of panicles, or when 200,000 seedlings per acre are reached, the field is lightly sunk many times and the surface of the soil is developed. Hard for the degree of excessive growth of vegetative overemphasis. After the hiccup period, dry and wet alternate irrigation was used, and water was cut off approximately 10 days before maturity.
Nitrogen, phosphorus and potassium balance and nitrogen fertilizer application based on soil fertility and fertilizer nutrient utilization determine the amount of fertilizer, so that the quantitative seedling fertilizer application, that is, the color depth (leaf color card readings above 4.0) is appropriate, the leaf color is light ( Leaf color card readings 3.5 or less) Appropriately. It is advocated that compound fertilizer is used as both base fertilizer and top dressing.
Comprehensive prevention and control of pests and weeds before planting with 35% good Anwei seed dressing can effectively control the occurrence of pests in the field, spraying the long-acting pesticides 3 to 5 days before the picking time in the flooded fields, and the seedlings with herbs Xia Tian. Daejeon period should focus on the prevention and control of S. japonicus, S. japonicum, and rice planthoppers. 100-120 grams of benzyl chloride per acre, spraying 30 kilograms of water, other herbicides for transplanting rice, or herbicide for throwing rice, etc., can be mixed and applied during the tillering period to fertilize and maintain a shallow layer of water for about 5 days. Control weeds.
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