论文部分内容阅读
稻渔 (蟹 )共作水稻的施肥关键在于用好基蘖肥主攻穗数 ,产量 9.0t/hm2 左右的优质粳稻总施氮量以2 2 5kg/hm2 为宜 ,追肥以分蘖肥为宜 ,分蘖肥早施 ,可保证足够穗数并获高产 ;腐植酸类生物有机肥黑丰佳一次性基施不仅可提高稻渔 (蟹 )共作水稻的产量 ,对稻米的品质也有显著的改善作用 ;在基施黑丰佳的基础上于分蘖期追施适量尿素更有利于稻渔 (蟹 )共作水稻产量的提高 ,其中黑丰佳控制在总施氮量的 5 0 %～ 70 %为宜 ,对稻米的品质改善也较为有利。
The key to fertilization of rice-crab (Oryza sativa) co-cultivated rice is to use the key tillering of main tillage, and the total N application rate of high-quality japonica rice with the yield of 9.0 t / hm2 is 225 kg / hm2. The application of tillering fertilizer can ensure sufficient spikes and obtain high yield. The humic acid organic fertilizer Heifengjia can improve the yield of rice co-cultivated rice and also improve the quality of rice ; On the basis of basal black Feng Jia, topdressing adequate amount of urea at the tillering stage was more conducive to the increase of rice-crab co-production rice, of which, black Feng Jia controlled 50% -70% of the total nitrogen Should, better quality of rice is also more favorable.