CAJ | 학술논문

为了建立适宜当地干旱生境下棉花膜下滴灌节水栽培参考标准模式,在甘肃省民勤特早熟棉区选择试验点,以‘酒棉8号’棉花新品种为试验品种,在每公顷18万株～33万株密度下,设2250 m3/hm2、2550 m3/hm2、2850 m3/hm2、3150 m3/hm2、3600 m3/hm2和4200 m3/hm26个全生育期不同滴灌量处理,应用WET-HH2型土壤水分温度电导率速测仪,在每次定额滴灌2天后测定20 cm、40 cm、60 cm、80 cm和100 cm 5个不同土层的体积含水量（VWC）,观测土壤VWC下降至20%时所需的间隔天数。结果表明,20～60 cm土层VWC受自然蒸发和棉花植株蒸腾失水的影响明显,在3600 m3/hm2滴灌量下,籽棉产量最高,平均达到每公顷4414.5 kg,为民勤特早熟棉区适宜的膜下滴灌量。在生产中可供参考的标准膜下滴灌模式为：全生育期共滴灌8次,首次在6月20日,末次在8月30日,每次滴灌定额为300～525 m3/hm2,不同生长时期滴灌的间隔时间为8～15天。
위료건립괄의당지간한생경하면화막하적관절수재배삼고표준모식,재감숙성민근특조숙면구선택시험점,이‘주면8호’면화신품충위시험품충,재매공경18만주～33만주밀도하,설2250 m3/hm2、2550 m3/hm2、2850 m3/hm2、3150 m3/hm2、3600 m3/hm2화4200 m3/hm26개전생육기불동적관량처리,응용WET-HH2형토양수분온도전도솔속측의,재매차정액적관2천후측정20 cm、40 cm、60 cm、80 cm화100 cm 5개불동토층적체적함수량（VWC）,관측토양VWC하강지20%시소수적간격천수。결과표명,20～60 cm토층VWC수자연증발화면화식주증등실수적영향명현,재3600 m3/hm2적관량하,자면산량최고,평균체도매공경4414.5 kg,위민근특조숙면구괄의적막하적관량。재생산중가공삼고적표준막하적관모식위：전생육기공적관8차,수차재6월20일,말차재8월30일,매차적관정액위300～525 m3/hm2,불동생장시기적관적간격시간위8～15천。
Total of six drip-irrigation volumes（m3） per hectare including 2250 m3,2550 m3,2850 m3,3150 m3,3600 m3 and 4200 m3 were determined for the water physiology study of a new cotton cultivar‘Jiumian8’ under the 180000-330000 plants per hectare of the cultivating density in the experimental field choiced at Minqin of Gansu Province.After two days of each drip-irrigation,the volume water content（VWC） under the soil layers of 20 cm,40 cm,60 cm,80 cm and 100 cm were measured by the WET-HH2 conductivity meter of the soil water and temperature,respectively.Then The standards mode was established for local drought habitat under drip irrigation by observing the interval time when soil VWC dropped to 20%.The results showed that the VWC under the soil layers from 20 cm to 60 cm significantly suffered from the soil natural evaporation and the transpiration of cotton plants.The yield of the seed cotton was highest up to 4414.5 kg per hectare under the 3600 m3 of drip-irrigation volumes per hectare,which was the optimal drip-irrigation volume for the special early maturing cotton area in Minqin.In the production of standard drip irrigation mode was： total of 8 times of the drip irrigation in the whole growth stages was from the first time 20,June to the last time 30,August,drip-irrigation 300-525 m3 per hectare and drip-irrigation intervals was 8-15 days at different growth stages.