春夏玉米套作高产优质高效特性研究

简述了春夏玉米套作在土壤氮素平衡、子粒产量、营养产量及纯收入等方面的表现,并提出了春夏套作高产优质高效的栽培技术要点。与单作相比,套作增加了对土壤氮素的吸收和利用,合理施氮可以维持土壤氮素平衡。春夏玉米套作,每公顷产量可达18 000kg,纯收入达20000元,同时可以生产近20 000kg秸秆作饲料,不但提高了土地利用率,缓解了人畜争粮争地的矛盾,而且提高了农民收入,达到了高产优质高效的统一,在黄淮海地区有很大的推广前景。

Study on Characteristics of Spring-sown Maize & Summer-maize Inter-planting with High yield, High Quality and High Benefit

The effects of sprlng-sown maize and summer-sown maize inter-planting on nitrogen balance, yield, quality and benefit were studied. And according the study, the cultivation technique was also given. Compared with mono-cropping, increased the use of nitrogen, but increased the quantity of nitrogen applied could sustain the nitrogen balance. In spring-sown maize and summer-sowing maize relay-planting system, the yield was up to 18 000 kg, the benefit was near to 20 000 yuan RMB, and at the same time 20 000 kg high quality feed straw was got. Different maize cuhivars relay--planting improved the use of land, and increased the income of peasant, which was very important in the region of North China.