| Allium mongolicum Regel. , also named for Mongolia Leek, is the Allium of liliaceous,which distribute widely in hungriness, plain and dene of the northwest region and Inner Mongolia.This experimentation cut the Allium mongolicum. with different cutting frequencies ,on the manual plant condition, to study not only the effect of cutting frequencies on growth development , nutrition content ,output and so on. But also make certain the feasible harvest date and cutting frequencies, on the condition of manual plant and different plant aim. The result showed:1.There was some definite inhibit of cutting frequently in one year to every indexes of overground and underground annual Allium mongolicum. Inhibit was strengthen, with the increased of cutting frequencies:(1)Leaf fresh weight reduced to 60.1%,74.0% and 83.1%, leaf dry weight reduced to 59.2%,73.5% and 80.7%. Root fresh weight reduced to 39.5%,50.6% and 72.8% ,root dry weight reduced to 41.4%,47.3% and 70.7% .(2) Root length reduced to 5.8%,12.0% and18.4%. Root numbers reduced to 16.0%,27.0% and 44.7%.(3) Tiller numbers reduced to 19.9%,46.8% and 52.5%.(4) Bulblet diameter reduced to 20.9%,28.0% and 36.2%.2.With the increased of cutting frequencies, Allium mongolicum. bolting rate of second year reduced to 0%,40.0%,33.3% and 46.7%.Every cluster reduced to -11.0%,40.0%,31.1% and 64.4%.That was to say, if the cutting frequencies≥2 in one year, the bolting rate and bolting number of annual Allium mongolicum. would be restrained. There had not obvious influence to the bolting rate, contraries, had promotion to bolting number of every cluster.3. The biggest yield of annual and biennial Allium mongolicum.all were the TreatmentⅢ(cutting 3 times in one year). Each of yield was 212.8 kg/667m~2 and 1484.4 kg/667m~2.The single cluster yield of every treatment reduced gradually, with increased of cutting frequencies.4.Every cluster nutrition content was different appreciably. Cutting was propitious to accumulation of dry matter. With increased of cutting frequencies, soluble sugar content of annual Allium mongolicum .reduced, but had no obvious change of biennial .The appropriate cutting frequencies would promote the accumulation of leaf starch, With increased of cutting frequencies, crude fiber and fat content reduced Total flavone and amino acids content of second cluster ,cutting two times in one year (TreatmentⅡ) of biennial Allium mongolicum .,were the highest. soluble protein content was no obvious change.Sum up above result, we advise cutting once at the growth anaphase of annual Allium mongolicum . That was propitious to growth development of biennial Allium mongolicum. Biennial Allium mongolicum could cutting 4 times, but output of cutting 3 times was the highest. In order to make good use of the nutrition component, we should adopt the biennial (or above it) Allium mongolicum, and reduced cutting frequencies.This study not only supplied a gap to cutting frequencies and reaping of Allium mongolicum, but also provided the academic gist to harvest date and harvest time of different cutting aim. Furthermore, provided the practical guidance to the germplasm resource protection and industry development of Allium mongolicum. So, it has widely foreground.
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