黄河三角洲农牧业生产潜力

本文从对黄河三角洲的宜农地和宜牧地的分析入手,对该区农作物生产潜力、牧草及载畜量潜力进行了探讨。并针对目前农牧业生产水平和存在的问题,提出了相应的对策。

THE POTENTIAL PRODUCTIVITY OF AGRICULTURE AND ANIMAL HUSBANDRY IN THE YELLOW RIVER DELTA

This paper inquires into the potential productivity of agriculture and animal husbandry on the lands suitable to farming and animal husbandry in the Yellow River Delta.In Studying agricultural potential productivity, this paper gets different potentiality levels by calculating the potential productivity of photosynthesis, photosynthesis-temperature, climate, crops and planting institution. The photosynthesis-temperature potential productivity of planting institution in Yellow River Delta (the upper limit of irrigated agriculture) is 4705 kg/ha.a(F = 2%),11769 kg/ha.a(F=5%), 25883 kg/ha.a (F=11.4%). But in 1988, the average yield is only 4035 kg/ha. The relevant indexes of potential productivity (D) are 14%,66%,84% respectively.In Studying potential productivity of animal husbandry, the future theoretical number of carrying capacity can reach 421010 ox units, according to the climatical potential productivity of forage grass (F=1%, 17976 kg/ha-a) and the crop straw (F = 2%). But the present theore tical number of carrying capacity of pasture land and crop straw is 96400 ox units. In fact, 82300 ox unit have been raised with a poten-iality of 14100 ox unit. The future theoretical number is 4.3 times as many as the present heoretical number of carrying capacity.Comparing the region's standard of present productive force with the levels of the theoretical upper limit analysed above, we know that there are tremendous potential productivity, and also difficulty in exploitation and harnessing. On the basis of potentiality analysis, this paper points out the existing problems and the contermeasure to be taken. The research can provide theoretical basis for working out different stage objectives of developing planning of agriculture and animal husbandry.