| Phyllostachys pubescens is widely used in many aspects and easy to cultivate. It has short growth cycle, high economic value and ecological benefits. With the increased demand, bamboo fertilization is playing an important role in improving the productivity. However, pollution and waste exists because of unreasonable fertilization at present, and it constraints the sustainable management of bamboo industry. As a resource-saving and environment-friendly fertilizer, slag fertilizer play an important role in the development of bamboo industry and it promotes the optimization of material and energy cycle. This paper took bamboo slag fertilizer as the research object, made research on the changes of bamboo growth and soil physical and chemical properties after fertilization in Jiangxi Yongfeng. Through the evaluation of the slag fertilizer effect, we will get a theoretical basis guide for bamboo fertilizer management.The main conclusions are as follows:1. Bamboo slag fertilizer increased the bamboo production and improved the bamboo forest quality significantly. Compared with ck treatment, fertilization treatments increased the bamboo chest diameter, increased the number of shoots, improved the survival number of bamboo shoots and increased the aboveground biomass. The slag fertilizer has a good sustained release performance and the release effect will be more outstanding as time increased. Compared with ck treatment, the bamboo shoots of KZF1 increased 41.7%, I degree bamboo's aboveground biomass increased 27.6%. The average of KZF1 bamboo diameter was the maximum, KZF2 and ZYF increased, too. Fertilization treatments increased the number of new age bamboo, KZF1,KZF2 and ZYF increased 37.0%,38.9% and 39.8%, but the survival rate reduced.2. Fertilization could improve the quality of bamboo shoots. Slag fertilizer was also beneficial to the accumulation of Zn. The ratio of edible parts and water content of bamboo shoots was significantly different between treatments. Fertilization increased the ratio and water content of edible parts, and the increased size was in the order of ZYF> KZF1> KZF2. The change of bamboo shoots quality after slag fertilizer and specialty fertilizer application was very significant, the results were as follows:slag fertilizer and specialty fertilizer reduced crude fiber content,increased the content of sugar,protein and fat. Tannin and Zn content was increased after fertilizing KZF1 and KZF2, decreased after fertilizing ZYF. At the same time, this research found that the correlation of bamboo shoots indicators was close. 3. Fertilization could obviously improved soil physical properties. There was a big difference between the upper and lower soil in soil water content,soil bulk density and soil porosity filtration rate. Soil water content and soil bulk density, generally the content of lower soil level was higher than the upper level. However, the porosity and filtration rate showed:upper level>lower level. The results also showed that fertilization can increase soil moisture, the result was:KZF1>ZYF>KZF2>CK. The content of soil bulk density differ each other highly significant, the soil filtration rate showed the same rule. The result of total soil porosity is:ZYF>KZF1>KZF2>CK. In improving soil physical properties, KZF1 and ZYF performed better than other treatments.4. Fertilization could obviously improved soil chemical properties. The organic matter,available nitrogen,available phosphorus,available potassium,available Cu,Zn,Fe and Mn showed that the upper level content higher than the lower level. KZF1,KZF2 and ZYF could increase the content of organic matter,NPK, and the increased number showed that the upper level higher than the lower level. The differences between each treatment were significant or highly significant. At the same time,KZFl and KZF2 could increase the content of Cu,Zn,Fe and Mn, and they were significantly correlated to each other. |
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