Root Restriction And Micro Sprinkler Irrigation For Grape Growth And Development

In order to investigate the conditions under high temperature and drought irrigation methods and irrigation amount of grapes, using root restriction, Combined with micro-sprinkler irrigation from pressure, to investigate the effects of different amounts of irrigation growth and development of seedless white grapes, to find a suitable amount of irrigation, research results are as follows1.Seedless mature roots in the horizontal distribution:0～50cm at the root of the total root 66.08%, From 150-200cm although there are some roots, But the proportion of less, Accounted for only 4.31% of the entire root system; Vertical root distribution in the soil:The largest distribution at the 40-60cm, This layer of the soil accounted for nearly 40% of the total,0-60cm at 70% of the total,120cm depth below the root system has been very little, less than 1% of the total。October after irrigation reduction, absorbing roots substantial reduction。2.Turpan Thompson Seedless absorption roots in May to June in the process of rapid growth, this period is also the crop water, fertilizer requirement and maximum period。In mid-July, as temperatures rise, decrease in the number of absorbing roots, In September, the absorbing roots have grown once the peak period。3.Throughout the period of shoot growth, grape shoot growth followed from high to low: CK> TR3> TR2> TR1, Irrigation on the length of shoot growth is very significant impact, From the shoot growth rate perspective, April 15-May 6 is the fastest period of growth of new shoots。4. With the growth of grape plant chlorophyll content increased, but more gentle change。 From Thompson Seedless several critical period of growth and development perspective, different irrigation seedless chlorophyll content have shown:CI>TR3> TR2>TR1。5.CK, TR3 two kinds of irrigation fruit weight reached more than 2.8g, fruit weight close to the high-quality fruit, Other processed fruit maturity is only 2.4-2.5g, To pick, each processing sugar content can reach about 20°, Meet the requirements of high-quality seedless fruit。6.CK highest yield more than TR1 irrigation 210kg, exceeded 15.24%, TR3 production yield and furrow is roughly equal, per acre water saving nearly 600m3; Taking these factors, the amount of water control 1100m soft Guanguan about more appropriate, both to ensure the stability of grape production, but also improve water use efficiency。Experimental results show that,1186m3/667m2 of irrigation water, combined with root restriction Gobi gravel to meet the Turpan area seedless normal vegetative growth and production of grapes and furrow considerable.