水稻田间肥效校正试验

为了验证"3414"试验给出的最佳施肥量和施肥比例,完善测土配方施肥模型,参照测土配方施肥肥效校正试验方案的要求,进行了水稻田间肥效校正试验。结果表明,推荐的最佳施肥量每667 m2氮肥(N46%)10.2 kg、磷肥(P2O512%)4.2 kg、钾肥(K2O 60%)5.2 kg,可获得最理想的水稻产量每667m2407.1 kg、净收入720元和净增值(除地力)2.3元,比农户习惯施肥处理分别提高2.3%、2.3%和4.5%。试验结果可为当地配方设计、施肥指导和建立并验证施肥指标体系提供依据。

Study on the rice field calibration test of fertilizer effect

In order to verify the best amount and ratio of fertilizations via the "3414" field trails,and to improve the model of soil testing and formulated fertilization,according to the requirement of soil testing and fertilizer effect of calibration field trail program,the rice field calibration test of fertilizer effect has been proceeded.The test showed that the recommended amount and ratio of fertilization,namely nitrogen fertilizer(46% N) in 10.2 kg/667m2,phosphate fertilizer(12% P2O5) in 4.2 kg/667m2,potash fertilizer(60% K2O) in 5.2 kg/667m2,can get a best grain yield of 407.1 kg/667m2,a net income of 720 yuan/667m2 and a net added value(in addition to field fertility) of 2.3 yuan/667m2,respectively increasing 2.3 percent points,2.3 percent points and 4.5 percent points compared with the treatment group of recommended fertilization amount.These results of the research can provide a certain basis to the compound design,the guide of fertilizer application and the establishment and validation of fertilization index system.