Effects methane liquid on root and yield of film mulched wheat

Film mulching plus seed soaking in methane liquid creates reasonable yield structure, which increases the yield of wheat by 9.88% and 67.65% compared with only film mulching and without mulching respectively. Its mechanism is to promote the development of wheat's root system in seedling stage and then enhance the growth of the plants above ground in middle and late stages which strengthens their ability of resisting adverse conditions. Four kinds of foliage spray were used that could increase yield by some extent. The KH₂PO₄ is the best. It increase yield by 11.94% to 13.92% than the control respectively. The others are Maifengle, Methane liquid, red apple No 2. Whose increase rate was less than 6%. All foliage spray can increase plant height, spike number, grain number per spike and grain weight.