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In order to evaluate the impact of the continuous film-mulched and controlled release coated urea on rice paddy soil fertility and nutritional properties of rice, in Jinhua City, Zhejiang Province, Lanxi Duntou the town (Jinqu Basin) and 2010, respectively, from 2001, 2008 Trail Town, Yuhang District, Hangzhou (plain areas) Rice of film-mulched and controlled release coated urea test. The results are as follows: 1. Water compared to 3.0% in the case of 10 consecutive years of film-mulched and isonitrogenous the rice maturity shoot total nitrogen content by a 5.8% reduction in total phosphorus uptake, while total The amount of potassium uptake is not very different; film-mulched rice effective panicles increased 15.0%, grain number and seed rate reduced by 5.7% and 3.2%, respectively, the yield difference was not significant. Rainfed compared with bare land, the film-mulched so the rice maturity aboveground nitrogen, total uptake of phosphorus, potassium, respectively, an increase of 11.9%, 8.4% and 5.6%, effective panicles per panicle and seed rate respectively, an increase of 29.9%, 7.2% and 4.2%, a significant production increase of 6.1%. Returning straw conducive to comprehensively improve the film-mulched rice aboveground nutrient content and yield. The results show that for 10 consecutive years of film-mulched rice production, the interannual variability of the yield of each treatment, this may be because of the different years of growth changes to the environment caused by Beginning in 2001, the first increase in rice yield decreased to the highest production in 2003, began to decline in 2004, a slight rebound in 2007, declined again in 2010, of which the most serious decline bare land rainfed treatment. The more obvious effects of continuous film-mulched soil nutrient content, soil organic matter content decreased of film-mulched straw for the 2010 harvest and to field soil organic matter content, respectively, lower than the same period in 2001 by 23.7 % and 27.6%; conventional water reduced by 12.1% and 16.1%, respectively; bare land rainfed reduced by 8.3% and 9.7%. 2010 harvest processing of film-mulched soil organic matter than traditional water as bare land rainfed reduced by 5.6% and 2.2% respectively. Film-mulched than conventional water paddy soil available P and K content increased by 23.1% and 18.3%, 10.4% reduction in nitrogen content; rainfed compared with bare land, the film-mulched soil available phosphorus and K content decreased 6.6% and 6.4%, alkaline hydrolysis N was not significantly different. Paddy soil organic matter, nitrogen, available phosphorus and available potassium Stalk than not to field a significant increase of 6.4%, 7.7%, 8.5% and 87.1%. Therefore, straw favor of the overall increase of film-mulched soil nutrient content, has a significant role in fertility. Controlled release coated urea nutrient release rate and crop fertilizer Law coordinate a new type of fertilizer, compared with ordinary urea can increase the effective panicles of rice, seed rate, yield and nitrogen utilization. The Lanxi Duntou point, after three years of continuous film-mulched and water, the resin coated urea treated rice effective panicles per panicle and seed setting rate than ordinary urea were increased by 4.9%, 6.0 % and 2.4%, yield was significantly increased by 7.5%, nitrogen agronomic efficiency and nitrogen use efficiency increased by 3.3% and 13.9% percent. Paddy fields caused the coated urea continuous film-mulched soil fertility degradation mitigation effect, but the short-term outcome of the trial is not very obvious, yet to be a long-term test. Yuhang Keng Shan point, in nitrogen film-mulched and water for the conditions, a one-time basal application of sulfur plus resin double coated urea than normal urea fertilizer at different stages deal with effective panicles and grains per panicle were significantly increased 24.8% and 17.9%, the yield was significantly increased by 7.7%. Nitrogen agronomic efficiency of nitrogen use efficiency were significantly increased by 3.1% and 22.8%.
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