摘要
在计算东北各地主要粮豆作物(玉米、大豆、水稻)光合、光温和气候生产潜力的基础上,根据现实单产占各级资源生产潜力的比率,分析了各地主要作物光合、光温、气候生产潜力实现率及其地理分布.东北区各地作物气候资源实现率差别较大,主要产粮区作物光合、光温和气候生产潜力实现率依次为 30%、40%和 50%左右,中低产区依次为24%、30%和40%左右.通过改土治水,采用良种良法和增加农田投入,作物光温生产潜力实现率可以逐年提高,最终可达到100%,即主要产粮区作物单产可达到18000kg/hm^2～20000kg/hm^2.表1,图4,参4.
On the basis of the calculation of the climate potential productivity of main grain crops (conurice and soyban), therealization rates for the main grain crops ,and their geographic distribution were analysed by the ratio of actuae yield to the resource potential productivity perunit area. The realization rates of main crops in every region are difterent in the main grain areas, Av-eragelly, the realiztion rates of photosynthesis, light - temperature and climate productivity are only 30% , 40% and 50% however, in the milldle -low yield areas, the realization rates are 24% . 30% and 40%. The realization rates can be raised by improving the soil and water conservancy using the imporved variety and increasing in put to farmland. The light - temperature productivity realization rate reach 100% is possible, The grain crops can reach 18000kg/hm-2000kg/hm2 in main crops of the Northease China.
出处
《农业系统科学与综合研究》
CSCD
北大核心
1999年第3期203-208,共6页
System Sciemces and Comprehensive Studies In Agriculture
关键词
粮豆作物
气候
生产潜力
实现率
东北区
Main grain crop, Realization rate for climate resources productivity, Geographic distribution, Northeast of China
