覆盖地膜对旱地小麦生育及土壤水分和温度的影响

The Effect of Covering Soil Film on the Bearing of Wheat,the Moisture and the Temperature of the Dry Land

旱地小麦覆盖地膜试验研究结果表明 :旱地覆盖地膜与对照 (不盖膜 )相比 ,小麦生育期内土壤水分含量平均提高 0 .71 %～ 3.0 3% ,地温平均升高 0 .75～ 0 .90℃ ;小麦越冬期单株分蘖多 0 .8～ 1 .1个 ,三叶大蘖多 0 .4～ 1 .0个 ,次生根多 0 .8～ 2 .0条、长 5 .6～ 1 1 .5 cm ;返青期单株分蘖多 0 .5～ 0 .8个 ,三叶大蘖多 0 .4～ 0 .8个 ,次生根多 1 .0～ 6 .8条 ;穗粒数多 6 .6～ 8.5个 ,千粒重高 2 .0～ 3.0 g。全生育期覆膜和周年覆膜分别较对照增产 +1 2 .40 %和 - 6 .2 7%

The testing result of study on the covering of soil film on the dry land wheat has shown that:the using of covering soil film,comparing to no using of it , can get the following results :the average content of soil moisture 0.71 %～3.03% higher in the wheat bearing stage,the average temperature of ground also 0.75～0.90℃ higher in that stage;in the living winter stage,more 0.8～1.1 tiller of the single stem tiller,more 0.40～1.0 giant tiller of triple leaf,more 0.8～2.0 secondary roots ,which length are 5.6～11.5 cm; in return green period,more 0.5～0.8 ones of the single stems,more 0.4～0.8 ones of triple leaf giant tillers,more 1.0～6.8 ones of secondary roots; and the number of grain about the single spike was more 6.6～8.5 ones,the weight of per 1000 grains was more 2.0～3.0g.The increasing productions using the covering soil film in all bearing period or in one year were +12.40% and -6.27% respectively, comparing with no using of covering soil film.