Less no-tillage cultivation techniques for rice and buckwheat mainly include seeding methods such as seedling-free seeding, seedling sowing and paddy sowing, as well as supporting techniques such as trenching, straw covering, chemical control and nitrogen fertilizer transfer. Applicable to the latitude of 30-35 degrees north latitude, including Jiangsu, Anhui, Henan, Hubei, Sichuan, Chongqing, Shandong rice and wheat fields. The rice straw mulching and straw mulching cultivation technology is based on the no-tillage and close-grained planting techniques. Mechanical exposition and straw mulching are the core contents, and the four aspects of yield increase, efficiency improvement, fertility improvement and environment improvement are harmoniously developed. . Rice harvesting leaves rice stubble shallowly, ditching irrigation, sowing 7-10 days before chemical weeding, with 2BJ-2 type simple human seeder sowing, basic seedlings per mu 150,000 -200,000, covering rice straw 200-300kg. Applicable to the southwestern winter wheat area, including Sichuan, Chongqing and western Hubei, northern Hebei, northern Hebei, southern Shaanxi and other places.
1. Less tillage machine drilling technology and plate spreading technology
Technical points: First, determine a reasonable basic seedlings. Proper sowing of 16-180000 per mu is appropriate. The second is fertilizer management. Former rice should be deep-rooted. Mushi pure nitrogen 12 ~ 14 kg, the bottom recovery ratio of 5:5, phosphorus, potassium 70% or all as base fertilizer. Early Shi Zhuang Feifei, appropriate supplemental application of relay fertilizer. The third is to cover straw. Mainly rice straw, more than 150 kg per mu. The main methods are: Mechanical harvesting of rice leaves sorghum (30~40 cm), the rest of the straw evenly covered in the field table, the entire amount of returning to the field; or with a uniform straw in turn followed by uniform coverage, density degree, sparsely exposed soil, dense Shade the light; or spread the straw into a short grass cover, to achieve a uniform, moderate, dense density. Fourth, do a good job in supporting the ditch system. This technology is applicable to wheat fields in Jiangsu, Anhui, Shandong, Henan, Hubei, Sichuan, and Chongqing.
2. Rice planting sowing wheat planting technology
Technical points: First, the choice of species. The use of cold-resistant and anti-freezing damage during the overwintering period, small impact on early suppression, and strong growth vigor in the middle and late stages, compensated for strong growth and good ripening dwarf and semi-dwarf compact wheat varieties. The second is to determine a reasonable symbiotic period. The symbiotic period is generally within 8 to 10 days, and should not exceed 15 days. The shorter the better. The third is accurate set broadcast. Basic seedlings are generally increased by 10%~30% compared with conventional tillage. The fourth is to open a ditch and do a good job of covering the soil. Ditch the soil to the surface and cover the seeds and fertilizer. Fifth, fertilizer management. After sowing, soil moisture, the application of fertilizer urea 5 kg / acre or nitrogen, phosphorus, potassium compound fertilizer (8:8:8) 15 kg / acre; in the seedling stage before the ditching re-apply seedlings fertilizer, with nitrogen, Phosphorus, potassium compound fertilizer (8:8:8) 30 kg/mu, plus urea 15 kg/mu, then sprinkled with high-quality gray fertilizer 1500~2000 kg/mu, and then ditch the ditch and evenly cover the fertilizer. , improve fertilizer efficiency. According to the seedling condition, the inverted 3 leaves reach out to the 1st leaf stage, the middle gluten wheat uses 15 kg/mu urea for the jointing and booting fertilizer, and the table is applied in 2 times. The amount of the panicle fertilizer in the weak gluten wheat is reduced by half, generally in the inverted 3 Leaf stage one-time application.
3. No-tillage, precision-seeded rice straw simplification and high-efficiency cultivation techniques
The first technical point is preparation before broadcast. Choose lodging resistance, disease resistance, high quality and high yielding varieties. About a week before sowing, we choose sunny days for chemical weeding. The second is precision seeding. It is advisable to use 14 to 160,000 mu of basic seedlings. Use 2BJ~2 type simple human planter to sow, pay attention to walking straight, moderate frequency, no rebroadcast, missed broadcast, to avoid the phenomenon of missing nests. The third is scientific fertilization. Mu with organic fertilizer 1000 ~ 1500 kg, 8 ~ 10 kg of pure nitrogen, phosphorus 10 kg, potassium 5 kg. Potassium deficiency and potassium deficiency areas should be increased. Nitrogen fertilizer used 60% as base fertilizer and 40% as jointing fertilizer. The base fertilizer is applied when the soil is wet after dipping and draining. The fourth is equalizing grass cover. Mu with dry straw 300 ~ 400 kg, evenly covered, to prevent the spread. Fifth, do a good job of field management. Sowing should be strengthened â€” water management at the seedling stage. Timely irrigation and water-saving irrigation, combined with irrigation and top-dressing joint fertilizer; Cascade spraying at the beginning of jointing, control lodging. Grasp the control of stripe rust, powdery mildew, head blight and aphids and topdressing of granular fertilizers. This technology is applicable to rice crops in wheat fields in Sichuan, Chongqing and the middle and lower reaches of the Yangtze River in winter.
SYNTHETIC PROTECTIVE GLOVES
SYNTHETIC PROTECTIVE GLOVES
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