The Effects Of Slow/Controlled Releasing Fertilizer And Applicationg Method On Yield And Quality Of Thompson Seedless

The Thompson Seedless planting is the characteristic industry in Turpan of Xinjiang region.,the main agricultural productions are Thompson Seedless and Thompson Seedless raisins. Planting area of Thompson Seedless is 28,000 hm2, accounting about 90% of the total area. Thompson Seedless -income account for 70% of the financial revenue, which is the pillar industry in Turpan.In Turpan the soil permeability is strong and great temperature difference between day and night, therefore with the unique climate condition it is the main production base of Thompson Seedless. However, Turpan region has lower soil organic matters and more graval, sandy soil and so on, the serious problems in there are loose soil and the fertilizer lose,which leading to the the low fertilizer use efficiency,and needs topdressing several times,not only to waste fertilize and do harm to environment but also has low operating efficiency, and it is a waste of manpower .So there is the demand of applying organic fertilizer and slow release fertilizer in topdreeing.With the basis of the former research, application of organic complex manure and technology of slow release fertilizer with paper bag has perforated are used in Shan-shan county to Thompson Seedless. Our research objective is to economize fertilizer and manpower, effectively protecting resources and environment, increase yield and income. Through the test,we screened out to the best fertilization method to the planting of Thompson Seedless in Xijiang.We get the Main results were obtained by experiment as follows:(1) Spraying iron fertilizer (treatment 2) plays more promotive effect to leaf photosynthesis and chlorophyll content than the treatment of not spraying iron fertilizer, the photosynthetic rate of plant rose,3 stages of leaf chlorophyll average content can increase 1 SPAD,yield increased 3.15% ,fruit sugar degreet was increased 4.69%. Because can promote the synthesis of chlorophyll content,DNA and hormones,so as to prmote leaf photosynthesis. (2) Applicating of organic complex manure showed positive promotion to the fruit yield and quality of Thompson Seedless.But the advangtage of just applying organic complex manure (treatment 4)was not obviously,the yield was 5.8% more than conventional fertilizer application (treatment 1), fruit sugar degreet was just increased 5.48%. Two index of tensile resistance and withstand voltage of fruit stalk and fruit change range was not apparently, respectively increased 12.91% and12.87% .The results show that the phenomenon of fertilizer leakage is the important factor to influence the increase yield of Thompson Seedless.(3) The treatment of bag-controlled release fertilizer and spraying iron fertilizer(treatment 7) has a good effect than the ways of fertilization method in local(CK), the yield increased by 47725 kg·hm2 , the yield increase rate being 38.6%,increase income by 23925.6 yuan·hm2. fruit sugar degreet was increased 22.80%,up to 19.93. Two index of tensile resistance and withstand voltage of fruit stalk and fruit change range was apparently bigger, respectively increased 38.18% and 78.93% .The tests result indicated that applicating of bag-controlled release fertilizer is an effective measure for increasing yieled of Thompson Seedless in Shan-shan county, which is a best way of fertilization modes to the yiele of Thompson Seedless.