Effcet Of Two Plant Growth Regulators On Growth State And Quality Of Walnut

In this paper the foliage spray experiments were made by using PP333and CCC in different concentrations. The different concentrations gradient of PP333(500ppm,1000ppm,1500ppm)and CCC (1000ppm,2000ppm,3000ppm,4000ppm) were set in walnut base of Wudu in2010. Study on the effects of PP333and CCC on walnut whole growth and exploring the effectively concentrations and the species of growth regulators to providing theoretical basis for High-yield cultivation of walnut.24indexes including growth and development, yield, fruit quality and so on were determination, the difference of different treatments were analysied. Comprehensive evaluation by using principal component analysis. The results were showed by research and analysis that:(1) Two kinds of growth regulators have inhibition effects on plant height, crown width, shoot length. Low concentration is better than high concentration in the inhibition effects of plant heigh. The inhibition effects of crown width are very significantly better than clean water. Totally, the effect of PP333is better than CCC, but the best is PP333(500ppm), the inhibition effect of spring shoot is not obvious. The control of autumn shoots reached a very significant level, and the high concentration of PP333and CCC better.(2) The top leaf and the side of the lobule area after processing have increased to some extent, and the increase for the PP333treatment effect is greater than the CCC; from chlorophyll, the two growth regulators were not significantly increased chlorophyll b content, but the CCC treatment could very significantly increase the content of chlorophyll a; from nutrient view, two growth regulators can delay the decline in rate of N content, leaf yellow of delay, the photosynthesis cycle of growth to a certain extent, in favor The accumulation of organic matter, different treatments of leaf P, K, Ca, Mg content difference is not significant.(3) Different growth regulators on the nuts three tracks, the wind dried fruit weight, shell thickness, kernel rate and other physical indicators have failed to have a significant impact. The different growth regulators can improve the walnut fat, protein and total sugar content to a certain extent, in improving the crude fat, protein content, PP333better than the CCC treatment group, and1500ppm of PP333treatment increased the sharpest water control group, respectively, compared with an increase of3.70%,2.40%; In addition, the impact of different growth regulators on total sugar content compared with the water control group, were very significant level, which,3000ppm of CCC treatment increased the magnitude of the maximum than the water The control group increased by1.13%. Different growth swap for linoleic acid, alpha-linolenic acid, saturated fatty acids, unsaturated fatty acids and tannin content did not have a significant impact.(4) The results show that different growth regulator treatment on shoot density, yield per plant had no significant effect; different growth regulator treatment unit projected area of the production were significantly better than the water control group, of which4000ppm of the CCC processing the largest margin of increase reached32.34%.(5) the use of principal component extraction, the resulting evaluation scores show a positive impact on growth and yield scores ranked from highest to lowest is:T12, T13,T24, T11, T14, T23, T22, T21, CK; a positive impact on nut quality score ranked from highest to lowest is:T12, T11, T14, T24, T23, T22, T21, T13, CK; walnut overall impact score rank order: T12, T22, T23, T11, T13, T14, T24, T21, CK.