不同覆盖条件对水果玉米生长发育和经济效益的影响

本研究设置裸地（CK）、拱棚覆盖（处理1）和覆膜（处理2）3个处理，分析了不同覆盖条件下土壤水热环境的变化及对水果玉米出苗率、株高、产量、经济效益的影响。结果表明：与CK相比，处理1和处理2具有较好的抗寒增温保水作用，出苗率分别提高24.49个百分点和23.23个百分点，最终株高分别增加85.97 cm和83.97 cm，经济效益分别增加38 750元/hm2和36 250元/hm2，净利润分别增加27 700元/hm2和35 500元/hm2。综上，处理1和处理2对早播水果玉米出苗、生长都有保护和促进作用，可使水果玉米上市时间提前，增加经济效益；但是因处理1成本较高，故净利润以处理2最高。

Soil water thermal environment under the conditions of different coverage of fruit corn growth and the influence of the economic benefits of research

his study set the CK respectively (bare land), treatment 1 (tunnel) and 2 (coated) three processing, thermal environment analysis of soil water fruit corn seedling emergence, plant height, yield and economic benefit.The results show that compared with treatment 1 and treatment 2 CK has good cold resistance heating in water;Treatment 1 and treatment 2 emergence rate respectively were 24.49% and 23.23% higher than CK, the final plant height were higher than CK 35.86 cm and 36.40 cm, economic benefits were higher than CK, hm - 2 and 35500 yuan, 27700 yuan hm - 2.In conclusion, treatment 1 and 2 are in earlier planting fruit corn, have protection on crop emergence, growth and promote role, time to market ahead of time, improve the economic benefit. 1 economic cost is higher, but the processing eventually deal with 2 have the highest net profit.