优质高产青刈豆科饲料—大绿豆(Phaseolus aurens var·gigantica)饲用青刈栽培试验

大绿豆是豆科一年生草本植物。其主要特点是:植株高大,茎叶繁茂,对土壤适应性广,无论农地、新垦红壤地、熟荒地或红壤砂土等均能种植;再生力强,每年可刈割4至5次,青割亩产可达4000公斤以上;营养丰富,粗蛋白含量(占干物)24.8%,适口性好,牛、猪、禽、兔喜爱采食,是亚热带地区解决畜禽蛋白质饲料来源的一个重要途径,值得推广.大绿豆作为家畜饲料进行青刈栽培和饲喂试验,系从1977年由本院开始.经四年试验和系统观察,掌握了其生物学特性、青刈栽培技术和营养成分及饲喂家畜的适口性等材料.

CULTIVATION OF BIG MUNG BEAN(PHASEOLUS AURENS VAR.GIGANTICA)AS HIGH QUALITY GREEN ROUGHAGE FOR ANIMAL FEED

Big mung bean(Phaseolus aurens var.gigantica)belongs to the leguminous family.It is an annual herbaceous plant,tall in stature and with luxurious growths,Being adapted to many soils,it is widely grown in cultivated field, virgin lateritic farm,old cultivated land,and red sandy loam.With highly ratooning capacity,it can be harvested green by reaping four or five times in a year.The cut green roughage gave a high yield amounted to 4,000 kg.per mu,per year.The green roughage is very nutritious,containing 24.8% gross protein on dry weight basis.It is palatable,and is highly prefered by cows, pigs,rabbits and poultry in their rations.It may be considered as the chief source of protein in the animal feed in the subtropical region and is well recom- mended for extension.Cultivation of big mung bean and the reaping of green rough- age for animal feed was well investigated in the college experimental plots for three years,beginning from 1977 to 1980.Observations from trial and check expe- riments revealed the ecological charateristics of the plant.We were thus able to manipulate the cultivation technique so as to acquire the best palatability and richest nutrient contents as the feed for animals.Extension work to introduce the green leguminous feed to farmers has also been done.