论文部分内容阅读
1 在作物栽培中,合理密植是农业“八字宪法”的中心,而播种量与密植程度有着直接关系,究竟要播多少种子,才能够达到增产的要求?这是一个错综复杂的问题。除去考虑种子的本身条件,例如:籽粒大小、发芽能力、生物学特性等以外,还要考虑播种时的其他条件,例如:播种期的早晚、播种方法、密植的程度、土壤的肥瘠、墒情、整地貭量、区的气候因素以及各种病虫害的危害情况等等。在这里,我们只结合初中三年级农业基础课中提到的播种时应根据那些原则控制播种量,来补充一些资料:
1 In crop cultivation, rational close planting is the center of the “Eight Character Constitution” of agriculture, and the sowing quantity is closely related to the degree of close planting. How many seeds to sow can increase the yield? This is a complicated issue. In addition to considering the seed’s own conditions, such as grain size, germination ability, biological characteristics, etc., other conditions at sowing time should also be taken into account, such as: sowing date, sowing method, planting density, soil fertility, soil moisture , The amount of soil preparation, climate factors in the area and the hazards of various pests and the like. Here, we only supplement some information with the principle of seeding control based on the principles of sowing mentioned in the third grade junior high school agricultural basic class: