In order to explore the straw mulch on wheat growth, reveal the differences of the different straw mulch on wheat growth and yield, and thus clearly the best straw mulch for dryland wheat production.

In order to explore for the wheat straw covered the impact growth, reveal different amount of coverage the straw of wheat growth and yield effects, and thus the differences clearly adapted to dryland wheat production the best straw cover.

In order to explore the straw stalk cover the influence which grows to the wheat, promulgates the different straw stalk cover quantity to the wheat growth growth and the output influence difference, then suits the arid land wheat production explicitly the best straw stalk cover quantity.

In order to explore the effects of straw mulching on the growth of wheat, revealing different amounts of straw mulching on growth and development and yield of wheat differences, and thus clear the best straw mulching for dryland winter wheat production.

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