An Experiment was conducted to study the effects of water deficits in different growing stages to plant growth, development and yield in winter wheat. Results show that water deficits decreased grain yield obviously. The more serious the stress was, the greater the yield decreased. In three stages (Jointing to booting, heading to flowering, and grain filling to harvest), yield loss was the greatest in treatment W1(upper limit of RW was set as 40%). But the effects of water stress on yield was different...
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