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豫北粳稻区多年来主要采用麦稻两熟模式，全年进行粮食生产，每公顷产小麦5250～6000kg，稻谷6750kg上下，年产值在18000元左右，净收入10500元上下，效益比较低。在人多地少的情况下，如何既保证粮食生产，又充分利用土地和劳动力资源，提高经济效益，这是我们农业科研人员的
Over the years, northern Japonica rice mainly uses the double cropping pattern of wheat and rice. The annual grain production is 5250 ~ 6000kg of wheat per hectare and 6750kg of rice. The annual output value is about 18,000 yuan and the net income is 10,500 yuan. The benefit is relatively low. Under the circumstance of a small population, how to ensure food production and make full use of land and labor resources and increase economic benefits? This is what our agricultural researchers