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我国北方水源不足,发展水稻生产受到很大限制。因此,必须改革水稻原有的种植制度,充分利用雨季的降水,以适应北方春旱夏涝的气候特点。近年来,水稻旱种已成为一种新兴的水稻种植制度。它是以省水为目的的栽培技术,即减少了生态用水,充分利用夏季雨水,关键时期补充灌溉水,达到高产稳产的目的,灌溉方法与小麦相似,整个生育期比小麦多浇2—3水,与原有的水稻种植制度比可节约用水2/3。因此水稻旱
Insufficient water resources in northern China have made the development of rice production severely restricted. Therefore, we must reform the original planting system of rice and make full use of precipitation during the rainy season in order to adapt to the climate characteristics of the spring drought and summer flood in the north. In recent years, dry cultivation of rice has become a new system of rice cultivation. It is a water-saving cultivation technology, which reduces the ecological water, make full use of summer rainfall, irrigation water during critical period to achieve the purpose of high and stable yield, irrigation methods similar to wheat, the entire growing period than wheat 2-3 Water, compared with the original rice planting system can save water 2/3. Therefore rice drought