In recent years, some rural households along the river changed their cultivation of cotton to planting food crops. However, due to water sources, most farmers planted dry rice. In order to seize the high yield of upland rice, farmers should pay attention to the following points: Well, apply the base fertilizer. Before the site preparation, apply 45% (15-15-15) of three-component compound fertilizer 20-30 kg per mu, urea 5-10 kg, zinc sulfate 1-2 kg mix well and spread evenly. Organic fertilizers or farmyard fertilizers can also be applied. Early sowing, open ditch. Seedlings or sowing in time before the rain, sowing in accordance with the width of 3-5 meters wide, with open ditch pear 18-25 cm deep to open irrigation drainage. Before sowing, select sunny sun seeds for 1-2 days and promote the use of pesticides to treat seeds. It is usually sown from late May to early June. Mu sowing rate 4-6 kg, sowing depth 2-3 cm. Can be broadcast, broadcast, on demand. Appropriate top dressing, nutrition. Usually in the 3-5 leaf stage of rice seedlings and before and after the beginning and end of ear respectively, urea topdressing 8-12 kg and 4-6 kg, the rest of the seedlings to see if the situation of supplementation or exemption from application, late dressing should not be excessive. Potassium and potassium-deficient areas can be applied before the joints in the mu of 5-10 kilograms of potassium chloride, or in the booting - heading spraying potassium dihydrogen phosphate, if zinc deficiency should be foliar spray zinc sulfate 1-2 times. Hit the seal and remove the grass. The control of weeds in direct-seeded paddy fields is mainly based on "closed soil", supplemented by "post-emergence removal" and combined with manual weed control. Closed commodity type high efficiency herbicide commonly used butachlor and oxadia mixed solution 45 kg (wetland) -75 kg (dry), after the sowing before spraying buds, so that spray evenly, not leaking, surface over When roughing, it is necessary to increase the amount of water, so that it can be sprayed during the early evening and early morning. It is forbidden to apply pesticides before and after sunny noon. Post-emergence application of selective herbicides based on breeding weed species occurs after emergence of rice to tillering stage. Annual grass weeds include diclofenac, ricin, etc. mainly used for barnyardgrass, Hanqiuhao mainly based on Matang, etc.; Qianjin and cyanofluoroacetate, etc., mainly used for Qiantang; Broad-leaved weeds, Trichosanthes, Cyperus rotundus and other Cyperaceae weeds with bentazone, bensulfuron-methyl, methamphetamine and so on. Any of the above herbicides for killing grasses can be mixed with any of the herbicides of broad-leaved weeds in an appropriate proportion and can kill both types of weeds at the same time. Diligent watering, waterproof stains. The live dry rice of wheat bran and rapeseed must be irrigated 2-4 times in a lifetime. Normally there is no rain in the clear field for 10-15 days, from booting to 5-7 days in full heading, 8-10 days in jointing and filling, ie timely irrigation of water 1 time. After sowing, if there is a lack of lyricism and no rainfall, it is advisable to fill the water promptly to benefit the whole seedlings. Appropriate increase in the number of irrigation or continued field moisture is conducive to increase production, drought years should be appropriate to increase the number of irrigation and irrigation, field bogey water soaked in the normal period. Prevent pests and promote yellow ripeness. The types and hazards of post-emergence pests and their methods of pesticide control are similar to those of the same season rice. Note the use of avermectin + chlorpyrifos + imidacloprid + jinggangmycin or rice thawing + pymetrozine in the booting-heading stage of late-late-September to early-September Love seedlings control rice leaf roller, rice planthopper, sheath blight, and rice smut disease.
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Dry rice cultivation techniques along the Yangtze River