摘要
浙江省主要种植稻茬小麦,稻草还田小麦迟播已多为常态.该试验研究稻草全量还田条件下,在总氮不变的前提下小麦生长的不同时期氮肥运筹比例对小麦品种浙华 1 号经济性状和产量的影响.试验结果显示,小麦施用氮肥相对于不施用氮肥产量显著增加,2022 年 11 月 1 日适期播种产量高于 2022 年 11 月 25 日迟播产量;施用总氮不变即 412.5 kg·hm-2,氮肥运筹比例不同即基肥∶苗肥∶孽肥∶穗肥分别为 4∶2∶4∶1 和4∶4∶2∶1,无论是适期播种还是迟播基肥∶苗肥∶孽肥∶穗肥为 4∶4∶2∶1 浙华 1 号产量最高,苗期增施氮肥主要是促进分蘖增加有效穗提高产量.
Abstract
In Zhejiang Province,rice-stubble wheat is mainly grown,and late sowing of rice straw is the norm.This experiment was conducted to study the effects of nitrogen fertilizer ratio at different stages of wheat growth on the economic characteristics and yield of Zhehua 1 wheat variety under the condition of total straw return and constant total nitrogen.The experimental results showed that the yield of wheat with nitrogen fertilizer was significantly increased compared with that without nitrogen fertilizer,and the yield of suitable sowing on November 1,2022 was higher than that of late sowing on November 25,2022.When the application of the same total nitrogen was 412.5 kg·hm-2,nitrogen fertilizer operation ratio was different,that is,base fertilizer∶seedling fertilizer∶fertilizer∶ear fertilizer was 4∶2∶4∶1 and 4∶4∶2∶1,whether it is suitable sowing season or late sowing,base fertilizer∶seedling fertilizer∶fertilizer∶fertilizer∶ear fertilizer was 4∶4∶2∶1,Zhehua 1 had the highest yield,Increasing nitrogen fertilizer at seedling stage is mainly to promote tillering,increase effective spike and increase yield.
基金项目
浙江省农业新品种选育重大科技专项(2021C02064-3-3)
浙江省"三农九方"科技协作项目(2023SNJF033)
维普
万方数据