EFFECTS OF IRRIGATION AND NITROGEN FERTILIZATION ON SOIL NA+ IN ROOT ZONE AND SALT-TOLERANTRICEYIELDTOLERANT RICE YIELD

The cultivation of salt-tolerantrice(searice)alongbeacheshasbecomeaneffectivemeasureforthetolerant rice (sea rice) along beaches has become an effective measure for the restorationandutilizationofsalinerestoration and utilization of saline --sodicland,sothispaperstudiestheeffectsofisodic land, so this paper studies the effects of i rrigationandnitrogenrrigation and nitrogen fertilizationonsoilNafertilization on soil Na++ inrootzoneain root zone andseariceyield,andprovidesnd sea rice yield, and provides ascientificbasisforplantingsearica scientific basis for planting sea rice.Ae. A potexperiment(twopot experiment (two--factorfactor splitplot)ofsearicewithsaltstress(10g NaCl/kg soil)wascarriedout.split plot) of sea rice with salt stress (10 g NaCl/kg soil) was carried out. TheThe mainmain ploplotconsistsofthreetypesofirrigationmethods:floodingirrigation(F),intermittentirrigation(I),andt consists of three types of irrigation methods: flooding irrigation (F), intermittent irrigation (I), and controlledirrigation(C).Thesubplotsarethreetypesofnitrogenfertilizers:urea(U),controlledcontrolled irrigation (C). The subplots are three types of nitrogen fertilizers: urea (U), controlled--releaseurearelease urea (R),andmixedfertilizer(M)with(R), and mixed fertilizer (M) with UandR.Theresultsshowed:(1)ThesoilwaterU and R. The results showed: (1) The soil water-- solubleNasoluble Na++ ofMIwasof MI was significantlysmallerthanthatofothertreatmentswithNaCl,buttheCasignificantly smaller than that of other treatments with NaCl, but the Ca2+/Na+ and Mgand Mg2+/Na+ wereopposite.(2)were opposite. (2) ThenitrogenuptakeanddryweightofriceofMIweresignificantlylargeThe nitrogen uptake and dry weight of rice of MI were significantly largerthanthoseofothertreatmentswithr than those of other treatments with NaCl,andwererespectively23%and32%higherthanUI,49%and16%higherthanMF,56%and38%NaCl, and were respectively 23% and 32% higher than UI, 49% and 16% higher than MF, 56% and 38% higherthanUF,75%and61%higherthanRI,76%and50%higherthanRF.(3)TheseariceyieldofMIwashigher than UF, 75% and 61% higher than RI, 76% and 50% higher than RF. (3) The sea rice yield of MI was increasedby105%increased by 105%,154%,262%,338%,and428%comparedwithMF,RF,UF,RI,andUI,respectively., 154%, 262%, 338%, and 428% compared with MF, RF, UF, RI, and UI, respectively. Therefore,theMIcaneffectivelyreducetheNaTherefore, the MI can effectively reduce the Na++ andincreasetheCaand increase the Ca2+/Na+ and Mg2+ Mg2+/Na+ inrootlayersoil,in root layer soil, andpromotethenitrogenabsorptionandproductionofsearice.Soand promote the nitrogen absorption and production of sea rice. So thearticlerecommendsthatMandIthe article recommends that M and I methodsshouldbeadaptedtoplantseariceoncoastalsalinemethods should be adapted to plant sea rice on coastal saline --sodicsoil.sodic soil.