Effects of Plant Density on Forage Nutritive Value of Whole Plant Corn  

作　　者：ZHANGJi-wang HUChang-hao WANGKong-jun DONGShu-ting LIUPeng 

机构地区：[1]AgronomyCollege,ShandongAgriculturalUniversity,Tai＇an271018,P.R.China

出　　处：《Agricultural Sciences in China》2004年第11期842-848,共7页中国农业科学（英文版）

基　　金：financia1ly supported by the National Natural Science Foundation of China(30170546);the Agricultural Science and Technology Spanning Program([2003]No.19),China.

摘　　要：In the field experiment, the effects of plant densities (75 000, 112 500 and 150 000 plants ha-1) on forage nutritive value of whole plant corn (WPC) were studied from 1999 to 2001. The results demonstrated that with the increasing of plant density, the forage matter yield per plant corn decreased significantly, while the fresh matter and dry matter per hectare corn increased significantly, and a higher grains yield was gotten at higher plant densities. Forage nutritive quality of whole plant corn was changed as plant density increased, the crude protein (CP), ether extract (EE), crude fiber (CF), nitrogen free extract (NFE) and general energy (GE) yields increased obviously. Increas- ing plant density reasonably with the application of plant growth regulators could improve plant properties, harvest more forage matter, and enhance forage nutritive value of WPC.In the field experiment, the effects of plant densities (75 000, 112 500 and 150 000 plants ha-1) on forage nutritive value of whole plant corn (WPC) were studied from 1999 to 2001. The results demonstrated that with the increasing of plant density, the forage matter yield per plant corn decreased significantly, while the fresh matter and dry matter per hectare corn increased significantly, and a higher grains yield was gotten at higher plant densities. Forage nutritive quality of whole plant corn was changed as plant density increased, the crude protein (CP), ether extract (EE), crude fiber (CF), nitrogen free extract (NFE) and general energy (GE) yields increased obviously. Increas- ing plant density reasonably with the application of plant growth regulators could improve plant properties, harvest more forage matter, and enhance forage nutritive value of WPC.

关 键 词：Summer corn(Zey mays L.) Plant density Forage nutritive value 

分 类 号：S513[农业科学—作物学] S544.9