摘要
[目的]探究水稻随水施肥技术的最佳施肥次数。[方法]以玉香油占为水稻供试品种，共设6个处理，分别为不施肥（ CK）、肥料深施、肥料撒施、肥料随水追施2次、肥料随水追施3次、肥料随水追施4次，研究各处理对水稻产量及经济效益的影响。[结果]在水稻生产中采用随水施肥技术，随着施肥次数的增多，各产量指标中除实粒数和空秕率外，其余均呈现先增加后减少的趋势，追肥3次处理的产量最高，比其他施肥方式增产7．83％～25．56％，追肥2次和4次处理的产量差异不大，随着施肥次数的增加，结实率提高。随水冲施处理的投入成本大于深施与撒施处理，净收益以肥料随水追施3次处理最高，达15515．73元／hm 2。[结论]综合考虑，肥料随水追施3次能最大程度凸显水稻随水施肥技术的增产效益和经济效益。
Abstract
Objective] The study aimed to explore the best fertilization times of rice with water.[Method]Take Yuxiangyouzhan as the test rice varietie, a total of 6 treatments were no fertilization (CK), deep fertilization, fertilizer applicator, fertilizer topdressing with water 2 times, 3 times with water and fertilizer topdressing fertilizer, topdressing with water 4 times, the effect of different treatments on the yield and economic benefit of rice were studied.[ Result] The yield indexes except filled grains and sterile grain rate first increased and then decreased with the increase of irrigation fertilizing frequency.The highest yield occurred in topdressing of 3 times, increased rice yield 6.35%-25.56%than other treatments.There was no significant difference between topdressing of twice and 4 times.The seed setting rate was increased with increasing the times of irrigation fertilizing.With the water spraying treatment cost is greater than the deep application and distribution, net in-come by 3 times with water fertilizer topdressing treatment was the highest, up to 15 515.73 yuan /hm2 .[ Conclusion] The labor cost and working strength were also increased with increasing the times of irrigation fertilizing .Comprehensive consideration suggests that topdressing of 3 times could gain the highest yield and best economic benefit with rice irrigation fertilizing technology.
国家科技期刊平台
NSTL
维普
万方数据