6Dawood S A,Hamad S N.A comparison of drip and furrow irrigation systems performances[C]//Drip/Trickle Irrigation in Action,Proceedings of the Third International Drip/Trickle Irrigation Congress,18-21 November 1985,Fresno,CA.
7Soft N V.Effect of water logging on soybean critical growth stages[J].Jorunal of Soil and Crops,1995,5 (2):141-144.
8Watson D J.The physiological bassis of variation in yield[J].Advance in Agronomy,1952,(4):101-145.