氮磷钾肥对黑龙港旱薄地棉田土壤养分及 棉花产量的影响

打开文本图片集

Abstract：Objective]Thesudyimedtexaminetheectsofitrogen，posprus，ndpotassumfertilizersonsltrint contents，otongowthndieldrelatedtraitsiteadndutrient-deicentHeilonggangegon.ethods]eeient was conductedfrom2022to2024attheWeixian ExperimentalStationof theCotonResearchInstitute，HebeiAcademyof AgricultureandForestrySciences.Arandomizedblockdesignwasadoptedwith fivetreatments：noferilizer，conventional fertilization，rogendeficiencyosphorsiiencyndpotassiciencySoiltotalrogenaldolyble nitrogen，availablephosphorus，andavailablepotasiumcontents were measuredaftercottonharvest.Atthesquarestage，early flowering stage，peak bollstage，andbollopening stage，dry matter accumulationof aboveground partsandplant nutrient contentsweredetermined，andfrilizerutilizationeficiencywascalculated.Bollnumberperplant werecountedonJuly15， August15，andSeptember10.Thebollweightandlintpercentageweremeasuredafterharvest，andtheseedcotonyieldand lintyieldwerecalculated.[Results]Theefectsofnitrogendeficiencyonsoiltotalnitrogenandalkali-ydrolyzablenitrogen contentwerenot significant.Inthe three-year experiment，thephosphorus deficiency treatment significantlyreducedsoil available phosphorus content by 8.5% 14.6% ，and 19.9% ，compared with conventional fertilization，while potassium deficiency treatment significantly reduced available potassium content by 10.3% ， 18.9% ，and 24.6% ，respectively.Compared with conventionalfertilization，itrogenuptakeofabovegroundpartsofcotoninthenitrogendeficiencytreatmentsigiicantly decreased by 35.7% 35.4% ，and 47.1% ，while phosphorus uptake of aboveground parts ofcoton in the phosphorus deficiency treatmentshowednosignificantdiference，ndpotassiumuptakeofabovegroundpartsofcottoninthepotassiumdeficiency treatment significantly decreased by 15.3% 13.0% ，and 21.1% in 2022，2023，and2024，respectively.Foragronomic effciency， fertilizercontrutioatendpparentutilationratetrognasteosteient，folloedypotassum，withosoru showing near-zeroefciency.Seedcottonyield in thenitrogendeficiency treatment significantlydecreased by 5.5% 5 13.1% ，and 25.7% ，while phosphorus deficiency hadno significant effectonyield，andpotassium deficiencyledtoareductionof 3.1% over threeyears.[Conclusion]Inthearidandnutrient-deficientHeilonggangregion，fertilizerstrategyshouldfollowtheprincipleof "applying efficient nitrogen，moderating potassium use，and reducing phosphorus".

Keywords： nitrogen; phosphorous; potassium; coton;soil nutrient content; growth and development; yield

棉花是河北省重要经济作物。（剩余21153字）