Water-saving and efficiency-increasing techniques for dry planting of Rice

Dry planting of rice is a drought-resistant, water-saving and efficient cultivation technique. It can not only save 25% of irrigation water and 40% of irrigation water compared with ordinary rice, but also reduce the operating procedures in rice production such as raising seedlings and transplanting. Compared with dry grain production such as corn and sorghum under the same conditions, the economic benefit is obvious. Rice dry planting refers to the field water management according to the regular moist irrigation mode after rice sowing and emergence, such as wheat, corn and other dry crops. The ecological characteristics of rice fields are that the water condition has always been a dry field state, which is mainly used in areas or fields with low rainfall and poor irrigation conditions. The technical key is: in the early stage of dry planting of rice, seedling emergence depends on natural moisture, and plots with low topography, flat and fertile land with certain irrigation conditions should be selected. In the northern region, seeds are generally sown from mid-April to mid-April, and seeds must be carefully selected. in order to avoid the harm of underground pests, seed dressing should be carried out, and the sowing amount should be increased appropriately, about 10 kg per mu. In order to promote the root development of seedlings and enhance the ability of drought resistance, sowing should be combined with soil preparation, about 15 kg of seed fertilizer and 35 kg of superphosphate. Most of the soils in the north are deficient in zinc, and the zinc deficiency in rice continuous cropping is more obvious, so zinc fertilizer should be applied as appropriate. In the process of dry planting of rice, if the water source is convenient, water should be irrigated every 3 seconds every 5 days, so that the water before and after the water is not dry; if the water source is insufficient, the key water should be irrigated five times, that is, tillering water, jointing water, booting water, heading water and grouting water, so as to ensure that the limited water resources are used on the blade.