木薯氮肥施用量试验研究

Experimental study of Nitrogen fertilization amount in Cassava production

为解决因氮肥施用不当、施肥不平衡造成的木薯产量较低问题,探讨木薯最佳氮肥施用量,以指导旱坡地种植木薯合理施用氮肥,进行了木薯氮肥施用量试验。试验结果表明,增施氮肥能促进木薯植株生长,过量施用氮肥会造成植株徒长;试验田块土壤全N含量为中等偏下;应用回归分析结果,最佳氮肥施用量为159.0kg/hm2,最佳产量37449.0kg/hm2;最大氮肥施用量为175.3kg/hm2,最大产量37528.2kg/hm2。结合当地实际情况,旱坡地种植木薯最佳氮肥施用量165.0kg/hm2,获最佳产量37496.6kg/hm2。

In order to solve the problems of lower cassava yield caused by irrational nitrogen fertilization and imbalanced fertilization, an experiment of best Nitrogen fertilization amount in Cassava production was conducted to guide the rational fertilization of cassava production in drought and slope lands. The experimental results show that more nitrogen fertilization can promote cassava growth and excessive nitrogen fertilization can cause plant excessive growth. In the experiment plot, its total nitrogen content is at middle and lower levels. By applying regression analysis results,when the best nitrogen fertilization is 159.0kg/hm^2,the highest yield will be 37449.0kg/hm^2. while the biggest nitrogen fertilization is 175.3kg/ hm^2, the best yield will be 37528.2kg/hm^2 lands, the best nitrogen fertilization amoun t Combined with local conditions, in drought and slope farmwill be 165.0kg/hm^2 with best yield of 37496.6kg/hm^2.